1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Video capture interface for Linux version 2 4 * 5 * A generic framework to process V4L2 ioctl commands. 6 * 7 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1) 8 * Mauro Carvalho Chehab <mchehab@kernel.org> (version 2) 9 */ 10 11 #include <linux/mm.h> 12 #include <linux/module.h> 13 #include <linux/slab.h> 14 #include <linux/types.h> 15 #include <linux/kernel.h> 16 #include <linux/version.h> 17 18 #include <linux/videodev2.h> 19 20 #include <media/v4l2-common.h> 21 #include <media/v4l2-ioctl.h> 22 #include <media/v4l2-ctrls.h> 23 #include <media/v4l2-fh.h> 24 #include <media/v4l2-event.h> 25 #include <media/v4l2-device.h> 26 #include <media/videobuf2-v4l2.h> 27 #include <media/v4l2-mc.h> 28 #include <media/v4l2-mem2mem.h> 29 30 #include <trace/events/v4l2.h> 31 32 /* Zero out the end of the struct pointed to by p. Everything after, but 33 * not including, the specified field is cleared. */ 34 #define CLEAR_AFTER_FIELD(p, field) \ 35 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \ 36 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field)) 37 38 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls) 39 40 struct std_descr { 41 v4l2_std_id std; 42 const char *descr; 43 }; 44 45 static const struct std_descr standards[] = { 46 { V4L2_STD_NTSC, "NTSC" }, 47 { V4L2_STD_NTSC_M, "NTSC-M" }, 48 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" }, 49 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" }, 50 { V4L2_STD_NTSC_443, "NTSC-443" }, 51 { V4L2_STD_PAL, "PAL" }, 52 { V4L2_STD_PAL_BG, "PAL-BG" }, 53 { V4L2_STD_PAL_B, "PAL-B" }, 54 { V4L2_STD_PAL_B1, "PAL-B1" }, 55 { V4L2_STD_PAL_G, "PAL-G" }, 56 { V4L2_STD_PAL_H, "PAL-H" }, 57 { V4L2_STD_PAL_I, "PAL-I" }, 58 { V4L2_STD_PAL_DK, "PAL-DK" }, 59 { V4L2_STD_PAL_D, "PAL-D" }, 60 { V4L2_STD_PAL_D1, "PAL-D1" }, 61 { V4L2_STD_PAL_K, "PAL-K" }, 62 { V4L2_STD_PAL_M, "PAL-M" }, 63 { V4L2_STD_PAL_N, "PAL-N" }, 64 { V4L2_STD_PAL_Nc, "PAL-Nc" }, 65 { V4L2_STD_PAL_60, "PAL-60" }, 66 { V4L2_STD_SECAM, "SECAM" }, 67 { V4L2_STD_SECAM_B, "SECAM-B" }, 68 { V4L2_STD_SECAM_G, "SECAM-G" }, 69 { V4L2_STD_SECAM_H, "SECAM-H" }, 70 { V4L2_STD_SECAM_DK, "SECAM-DK" }, 71 { V4L2_STD_SECAM_D, "SECAM-D" }, 72 { V4L2_STD_SECAM_K, "SECAM-K" }, 73 { V4L2_STD_SECAM_K1, "SECAM-K1" }, 74 { V4L2_STD_SECAM_L, "SECAM-L" }, 75 { V4L2_STD_SECAM_LC, "SECAM-Lc" }, 76 { 0, "Unknown" } 77 }; 78 79 /* video4linux standard ID conversion to standard name 80 */ 81 const char *v4l2_norm_to_name(v4l2_std_id id) 82 { 83 u32 myid = id; 84 int i; 85 86 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle 87 64 bit comparisons. So, on that architecture, with some gcc 88 variants, compilation fails. Currently, the max value is 30bit wide. 89 */ 90 BUG_ON(myid != id); 91 92 for (i = 0; standards[i].std; i++) 93 if (myid == standards[i].std) 94 break; 95 return standards[i].descr; 96 } 97 EXPORT_SYMBOL(v4l2_norm_to_name); 98 99 /* Returns frame period for the given standard */ 100 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod) 101 { 102 if (id & V4L2_STD_525_60) { 103 frameperiod->numerator = 1001; 104 frameperiod->denominator = 30000; 105 } else { 106 frameperiod->numerator = 1; 107 frameperiod->denominator = 25; 108 } 109 } 110 EXPORT_SYMBOL(v4l2_video_std_frame_period); 111 112 /* Fill in the fields of a v4l2_standard structure according to the 113 'id' and 'transmission' parameters. Returns negative on error. */ 114 int v4l2_video_std_construct(struct v4l2_standard *vs, 115 int id, const char *name) 116 { 117 vs->id = id; 118 v4l2_video_std_frame_period(id, &vs->frameperiod); 119 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625; 120 strscpy(vs->name, name, sizeof(vs->name)); 121 return 0; 122 } 123 EXPORT_SYMBOL(v4l2_video_std_construct); 124 125 /* Fill in the fields of a v4l2_standard structure according to the 126 * 'id' and 'vs->index' parameters. Returns negative on error. */ 127 int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id) 128 { 129 v4l2_std_id curr_id = 0; 130 unsigned int index = vs->index, i, j = 0; 131 const char *descr = ""; 132 133 /* Return -ENODATA if the id for the current input 134 or output is 0, meaning that it doesn't support this API. */ 135 if (id == 0) 136 return -ENODATA; 137 138 /* Return norm array in a canonical way */ 139 for (i = 0; i <= index && id; i++) { 140 /* last std value in the standards array is 0, so this 141 while always ends there since (id & 0) == 0. */ 142 while ((id & standards[j].std) != standards[j].std) 143 j++; 144 curr_id = standards[j].std; 145 descr = standards[j].descr; 146 j++; 147 if (curr_id == 0) 148 break; 149 if (curr_id != V4L2_STD_PAL && 150 curr_id != V4L2_STD_SECAM && 151 curr_id != V4L2_STD_NTSC) 152 id &= ~curr_id; 153 } 154 if (i <= index) 155 return -EINVAL; 156 157 v4l2_video_std_construct(vs, curr_id, descr); 158 return 0; 159 } 160 161 /* ----------------------------------------------------------------- */ 162 /* some arrays for pretty-printing debug messages of enum types */ 163 164 const char *v4l2_field_names[] = { 165 [V4L2_FIELD_ANY] = "any", 166 [V4L2_FIELD_NONE] = "none", 167 [V4L2_FIELD_TOP] = "top", 168 [V4L2_FIELD_BOTTOM] = "bottom", 169 [V4L2_FIELD_INTERLACED] = "interlaced", 170 [V4L2_FIELD_SEQ_TB] = "seq-tb", 171 [V4L2_FIELD_SEQ_BT] = "seq-bt", 172 [V4L2_FIELD_ALTERNATE] = "alternate", 173 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb", 174 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt", 175 }; 176 EXPORT_SYMBOL(v4l2_field_names); 177 178 const char *v4l2_type_names[] = { 179 [0] = "0", 180 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap", 181 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay", 182 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out", 183 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", 184 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", 185 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap", 186 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out", 187 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay", 188 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane", 189 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane", 190 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap", 191 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out", 192 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap", 193 [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out", 194 }; 195 EXPORT_SYMBOL(v4l2_type_names); 196 197 static const char *v4l2_memory_names[] = { 198 [V4L2_MEMORY_MMAP] = "mmap", 199 [V4L2_MEMORY_USERPTR] = "userptr", 200 [V4L2_MEMORY_OVERLAY] = "overlay", 201 [V4L2_MEMORY_DMABUF] = "dmabuf", 202 }; 203 204 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown") 205 206 /* ------------------------------------------------------------------ */ 207 /* debug help functions */ 208 209 static void v4l_print_querycap(const void *arg, bool write_only) 210 { 211 const struct v4l2_capability *p = arg; 212 213 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n", 214 (int)sizeof(p->driver), p->driver, 215 (int)sizeof(p->card), p->card, 216 (int)sizeof(p->bus_info), p->bus_info, 217 p->version, p->capabilities, p->device_caps); 218 } 219 220 static void v4l_print_enuminput(const void *arg, bool write_only) 221 { 222 const struct v4l2_input *p = arg; 223 224 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n", 225 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 226 p->tuner, (unsigned long long)p->std, p->status, 227 p->capabilities); 228 } 229 230 static void v4l_print_enumoutput(const void *arg, bool write_only) 231 { 232 const struct v4l2_output *p = arg; 233 234 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n", 235 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 236 p->modulator, (unsigned long long)p->std, p->capabilities); 237 } 238 239 static void v4l_print_audio(const void *arg, bool write_only) 240 { 241 const struct v4l2_audio *p = arg; 242 243 if (write_only) 244 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode); 245 else 246 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 247 p->index, (int)sizeof(p->name), p->name, 248 p->capability, p->mode); 249 } 250 251 static void v4l_print_audioout(const void *arg, bool write_only) 252 { 253 const struct v4l2_audioout *p = arg; 254 255 if (write_only) 256 pr_cont("index=%u\n", p->index); 257 else 258 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 259 p->index, (int)sizeof(p->name), p->name, 260 p->capability, p->mode); 261 } 262 263 static void v4l_print_fmtdesc(const void *arg, bool write_only) 264 { 265 const struct v4l2_fmtdesc *p = arg; 266 267 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, mbus_code=0x%04x, description='%.*s'\n", 268 p->index, prt_names(p->type, v4l2_type_names), 269 p->flags, (p->pixelformat & 0xff), 270 (p->pixelformat >> 8) & 0xff, 271 (p->pixelformat >> 16) & 0xff, 272 (p->pixelformat >> 24) & 0xff, 273 p->mbus_code, 274 (int)sizeof(p->description), p->description); 275 } 276 277 static void v4l_print_format(const void *arg, bool write_only) 278 { 279 const struct v4l2_format *p = arg; 280 const struct v4l2_pix_format *pix; 281 const struct v4l2_pix_format_mplane *mp; 282 const struct v4l2_vbi_format *vbi; 283 const struct v4l2_sliced_vbi_format *sliced; 284 const struct v4l2_window *win; 285 const struct v4l2_sdr_format *sdr; 286 const struct v4l2_meta_format *meta; 287 u32 planes; 288 unsigned i; 289 290 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 291 switch (p->type) { 292 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 293 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 294 pix = &p->fmt.pix; 295 pr_cont(", width=%u, height=%u, pixelformat=%c%c%c%c, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", 296 pix->width, pix->height, 297 (pix->pixelformat & 0xff), 298 (pix->pixelformat >> 8) & 0xff, 299 (pix->pixelformat >> 16) & 0xff, 300 (pix->pixelformat >> 24) & 0xff, 301 prt_names(pix->field, v4l2_field_names), 302 pix->bytesperline, pix->sizeimage, 303 pix->colorspace, pix->flags, pix->ycbcr_enc, 304 pix->quantization, pix->xfer_func); 305 break; 306 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 307 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 308 mp = &p->fmt.pix_mp; 309 pr_cont(", width=%u, height=%u, format=%c%c%c%c, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", 310 mp->width, mp->height, 311 (mp->pixelformat & 0xff), 312 (mp->pixelformat >> 8) & 0xff, 313 (mp->pixelformat >> 16) & 0xff, 314 (mp->pixelformat >> 24) & 0xff, 315 prt_names(mp->field, v4l2_field_names), 316 mp->colorspace, mp->num_planes, mp->flags, 317 mp->ycbcr_enc, mp->quantization, mp->xfer_func); 318 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES); 319 for (i = 0; i < planes; i++) 320 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i, 321 mp->plane_fmt[i].bytesperline, 322 mp->plane_fmt[i].sizeimage); 323 break; 324 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 325 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 326 win = &p->fmt.win; 327 /* Note: we can't print the clip list here since the clips 328 * pointer is a userspace pointer, not a kernelspace 329 * pointer. */ 330 pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, chromakey=0x%08x, clipcount=%u, clips=%p, bitmap=%p, global_alpha=0x%02x\n", 331 win->w.width, win->w.height, win->w.left, win->w.top, 332 prt_names(win->field, v4l2_field_names), 333 win->chromakey, win->clipcount, win->clips, 334 win->bitmap, win->global_alpha); 335 break; 336 case V4L2_BUF_TYPE_VBI_CAPTURE: 337 case V4L2_BUF_TYPE_VBI_OUTPUT: 338 vbi = &p->fmt.vbi; 339 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n", 340 vbi->sampling_rate, vbi->offset, 341 vbi->samples_per_line, 342 (vbi->sample_format & 0xff), 343 (vbi->sample_format >> 8) & 0xff, 344 (vbi->sample_format >> 16) & 0xff, 345 (vbi->sample_format >> 24) & 0xff, 346 vbi->start[0], vbi->start[1], 347 vbi->count[0], vbi->count[1]); 348 break; 349 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 350 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 351 sliced = &p->fmt.sliced; 352 pr_cont(", service_set=0x%08x, io_size=%d\n", 353 sliced->service_set, sliced->io_size); 354 for (i = 0; i < 24; i++) 355 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 356 sliced->service_lines[0][i], 357 sliced->service_lines[1][i]); 358 break; 359 case V4L2_BUF_TYPE_SDR_CAPTURE: 360 case V4L2_BUF_TYPE_SDR_OUTPUT: 361 sdr = &p->fmt.sdr; 362 pr_cont(", pixelformat=%c%c%c%c\n", 363 (sdr->pixelformat >> 0) & 0xff, 364 (sdr->pixelformat >> 8) & 0xff, 365 (sdr->pixelformat >> 16) & 0xff, 366 (sdr->pixelformat >> 24) & 0xff); 367 break; 368 case V4L2_BUF_TYPE_META_CAPTURE: 369 case V4L2_BUF_TYPE_META_OUTPUT: 370 meta = &p->fmt.meta; 371 pr_cont(", dataformat=%c%c%c%c, buffersize=%u\n", 372 (meta->dataformat >> 0) & 0xff, 373 (meta->dataformat >> 8) & 0xff, 374 (meta->dataformat >> 16) & 0xff, 375 (meta->dataformat >> 24) & 0xff, 376 meta->buffersize); 377 break; 378 } 379 } 380 381 static void v4l_print_framebuffer(const void *arg, bool write_only) 382 { 383 const struct v4l2_framebuffer *p = arg; 384 385 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%c%c%c%c, bytesperline=%u, sizeimage=%u, colorspace=%d\n", 386 p->capability, p->flags, p->base, 387 p->fmt.width, p->fmt.height, 388 (p->fmt.pixelformat & 0xff), 389 (p->fmt.pixelformat >> 8) & 0xff, 390 (p->fmt.pixelformat >> 16) & 0xff, 391 (p->fmt.pixelformat >> 24) & 0xff, 392 p->fmt.bytesperline, p->fmt.sizeimage, 393 p->fmt.colorspace); 394 } 395 396 static void v4l_print_buftype(const void *arg, bool write_only) 397 { 398 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names)); 399 } 400 401 static void v4l_print_modulator(const void *arg, bool write_only) 402 { 403 const struct v4l2_modulator *p = arg; 404 405 if (write_only) 406 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans); 407 else 408 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n", 409 p->index, (int)sizeof(p->name), p->name, p->capability, 410 p->rangelow, p->rangehigh, p->txsubchans); 411 } 412 413 static void v4l_print_tuner(const void *arg, bool write_only) 414 { 415 const struct v4l2_tuner *p = arg; 416 417 if (write_only) 418 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode); 419 else 420 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, rangelow=%u, rangehigh=%u, signal=%u, afc=%d, rxsubchans=0x%x, audmode=%u\n", 421 p->index, (int)sizeof(p->name), p->name, p->type, 422 p->capability, p->rangelow, 423 p->rangehigh, p->signal, p->afc, 424 p->rxsubchans, p->audmode); 425 } 426 427 static void v4l_print_frequency(const void *arg, bool write_only) 428 { 429 const struct v4l2_frequency *p = arg; 430 431 pr_cont("tuner=%u, type=%u, frequency=%u\n", 432 p->tuner, p->type, p->frequency); 433 } 434 435 static void v4l_print_standard(const void *arg, bool write_only) 436 { 437 const struct v4l2_standard *p = arg; 438 439 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n", 440 p->index, 441 (unsigned long long)p->id, (int)sizeof(p->name), p->name, 442 p->frameperiod.numerator, 443 p->frameperiod.denominator, 444 p->framelines); 445 } 446 447 static void v4l_print_std(const void *arg, bool write_only) 448 { 449 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg); 450 } 451 452 static void v4l_print_hw_freq_seek(const void *arg, bool write_only) 453 { 454 const struct v4l2_hw_freq_seek *p = arg; 455 456 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n", 457 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing, 458 p->rangelow, p->rangehigh); 459 } 460 461 static void v4l_print_requestbuffers(const void *arg, bool write_only) 462 { 463 const struct v4l2_requestbuffers *p = arg; 464 465 pr_cont("count=%d, type=%s, memory=%s\n", 466 p->count, 467 prt_names(p->type, v4l2_type_names), 468 prt_names(p->memory, v4l2_memory_names)); 469 } 470 471 static void v4l_print_buffer(const void *arg, bool write_only) 472 { 473 const struct v4l2_buffer *p = arg; 474 const struct v4l2_timecode *tc = &p->timecode; 475 const struct v4l2_plane *plane; 476 int i; 477 478 pr_cont("%02d:%02d:%02d.%09ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s", 479 (int)p->timestamp.tv_sec / 3600, 480 ((int)p->timestamp.tv_sec / 60) % 60, 481 ((int)p->timestamp.tv_sec % 60), 482 (long)p->timestamp.tv_usec, 483 p->index, 484 prt_names(p->type, v4l2_type_names), p->request_fd, 485 p->flags, prt_names(p->field, v4l2_field_names), 486 p->sequence, prt_names(p->memory, v4l2_memory_names)); 487 488 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) { 489 pr_cont("\n"); 490 for (i = 0; i < p->length; ++i) { 491 plane = &p->m.planes[i]; 492 printk(KERN_DEBUG 493 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n", 494 i, plane->bytesused, plane->data_offset, 495 plane->m.userptr, plane->length); 496 } 497 } else { 498 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n", 499 p->bytesused, p->m.userptr, p->length); 500 } 501 502 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n", 503 tc->hours, tc->minutes, tc->seconds, 504 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); 505 } 506 507 static void v4l_print_exportbuffer(const void *arg, bool write_only) 508 { 509 const struct v4l2_exportbuffer *p = arg; 510 511 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n", 512 p->fd, prt_names(p->type, v4l2_type_names), 513 p->index, p->plane, p->flags); 514 } 515 516 static void v4l_print_create_buffers(const void *arg, bool write_only) 517 { 518 const struct v4l2_create_buffers *p = arg; 519 520 pr_cont("index=%d, count=%d, memory=%s, ", 521 p->index, p->count, 522 prt_names(p->memory, v4l2_memory_names)); 523 v4l_print_format(&p->format, write_only); 524 } 525 526 static void v4l_print_streamparm(const void *arg, bool write_only) 527 { 528 const struct v4l2_streamparm *p = arg; 529 530 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 531 532 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 533 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { 534 const struct v4l2_captureparm *c = &p->parm.capture; 535 536 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n", 537 c->capability, c->capturemode, 538 c->timeperframe.numerator, c->timeperframe.denominator, 539 c->extendedmode, c->readbuffers); 540 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT || 541 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { 542 const struct v4l2_outputparm *c = &p->parm.output; 543 544 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n", 545 c->capability, c->outputmode, 546 c->timeperframe.numerator, c->timeperframe.denominator, 547 c->extendedmode, c->writebuffers); 548 } else { 549 pr_cont("\n"); 550 } 551 } 552 553 static void v4l_print_queryctrl(const void *arg, bool write_only) 554 { 555 const struct v4l2_queryctrl *p = arg; 556 557 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n", 558 p->id, p->type, (int)sizeof(p->name), p->name, 559 p->minimum, p->maximum, 560 p->step, p->default_value, p->flags); 561 } 562 563 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only) 564 { 565 const struct v4l2_query_ext_ctrl *p = arg; 566 567 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, nr_of_dims=%u, dims=%u,%u,%u,%u\n", 568 p->id, p->type, (int)sizeof(p->name), p->name, 569 p->minimum, p->maximum, 570 p->step, p->default_value, p->flags, 571 p->elem_size, p->elems, p->nr_of_dims, 572 p->dims[0], p->dims[1], p->dims[2], p->dims[3]); 573 } 574 575 static void v4l_print_querymenu(const void *arg, bool write_only) 576 { 577 const struct v4l2_querymenu *p = arg; 578 579 pr_cont("id=0x%x, index=%d\n", p->id, p->index); 580 } 581 582 static void v4l_print_control(const void *arg, bool write_only) 583 { 584 const struct v4l2_control *p = arg; 585 const char *name = v4l2_ctrl_get_name(p->id); 586 587 if (name) 588 pr_cont("name=%s, ", name); 589 pr_cont("id=0x%x, value=%d\n", p->id, p->value); 590 } 591 592 static void v4l_print_ext_controls(const void *arg, bool write_only) 593 { 594 const struct v4l2_ext_controls *p = arg; 595 int i; 596 597 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d", 598 p->which, p->count, p->error_idx, p->request_fd); 599 for (i = 0; i < p->count; i++) { 600 unsigned int id = p->controls[i].id; 601 const char *name = v4l2_ctrl_get_name(id); 602 603 if (name) 604 pr_cont(", name=%s", name); 605 if (!p->controls[i].size) 606 pr_cont(", id/val=0x%x/0x%x", id, p->controls[i].value); 607 else 608 pr_cont(", id/size=0x%x/%u", id, p->controls[i].size); 609 } 610 pr_cont("\n"); 611 } 612 613 static void v4l_print_cropcap(const void *arg, bool write_only) 614 { 615 const struct v4l2_cropcap *p = arg; 616 617 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n", 618 prt_names(p->type, v4l2_type_names), 619 p->bounds.width, p->bounds.height, 620 p->bounds.left, p->bounds.top, 621 p->defrect.width, p->defrect.height, 622 p->defrect.left, p->defrect.top, 623 p->pixelaspect.numerator, p->pixelaspect.denominator); 624 } 625 626 static void v4l_print_crop(const void *arg, bool write_only) 627 { 628 const struct v4l2_crop *p = arg; 629 630 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n", 631 prt_names(p->type, v4l2_type_names), 632 p->c.width, p->c.height, 633 p->c.left, p->c.top); 634 } 635 636 static void v4l_print_selection(const void *arg, bool write_only) 637 { 638 const struct v4l2_selection *p = arg; 639 640 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n", 641 prt_names(p->type, v4l2_type_names), 642 p->target, p->flags, 643 p->r.width, p->r.height, p->r.left, p->r.top); 644 } 645 646 static void v4l_print_jpegcompression(const void *arg, bool write_only) 647 { 648 const struct v4l2_jpegcompression *p = arg; 649 650 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n", 651 p->quality, p->APPn, p->APP_len, 652 p->COM_len, p->jpeg_markers); 653 } 654 655 static void v4l_print_enc_idx(const void *arg, bool write_only) 656 { 657 const struct v4l2_enc_idx *p = arg; 658 659 pr_cont("entries=%d, entries_cap=%d\n", 660 p->entries, p->entries_cap); 661 } 662 663 static void v4l_print_encoder_cmd(const void *arg, bool write_only) 664 { 665 const struct v4l2_encoder_cmd *p = arg; 666 667 pr_cont("cmd=%d, flags=0x%x\n", 668 p->cmd, p->flags); 669 } 670 671 static void v4l_print_decoder_cmd(const void *arg, bool write_only) 672 { 673 const struct v4l2_decoder_cmd *p = arg; 674 675 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags); 676 677 if (p->cmd == V4L2_DEC_CMD_START) 678 pr_info("speed=%d, format=%u\n", 679 p->start.speed, p->start.format); 680 else if (p->cmd == V4L2_DEC_CMD_STOP) 681 pr_info("pts=%llu\n", p->stop.pts); 682 } 683 684 static void v4l_print_dbg_chip_info(const void *arg, bool write_only) 685 { 686 const struct v4l2_dbg_chip_info *p = arg; 687 688 pr_cont("type=%u, ", p->match.type); 689 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 690 pr_cont("name=%.*s, ", 691 (int)sizeof(p->match.name), p->match.name); 692 else 693 pr_cont("addr=%u, ", p->match.addr); 694 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name); 695 } 696 697 static void v4l_print_dbg_register(const void *arg, bool write_only) 698 { 699 const struct v4l2_dbg_register *p = arg; 700 701 pr_cont("type=%u, ", p->match.type); 702 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 703 pr_cont("name=%.*s, ", 704 (int)sizeof(p->match.name), p->match.name); 705 else 706 pr_cont("addr=%u, ", p->match.addr); 707 pr_cont("reg=0x%llx, val=0x%llx\n", 708 p->reg, p->val); 709 } 710 711 static void v4l_print_dv_timings(const void *arg, bool write_only) 712 { 713 const struct v4l2_dv_timings *p = arg; 714 715 switch (p->type) { 716 case V4L2_DV_BT_656_1120: 717 pr_cont("type=bt-656/1120, interlaced=%u, pixelclock=%llu, width=%u, height=%u, polarities=0x%x, hfrontporch=%u, hsync=%u, hbackporch=%u, vfrontporch=%u, vsync=%u, vbackporch=%u, il_vfrontporch=%u, il_vsync=%u, il_vbackporch=%u, standards=0x%x, flags=0x%x\n", 718 p->bt.interlaced, p->bt.pixelclock, 719 p->bt.width, p->bt.height, 720 p->bt.polarities, p->bt.hfrontporch, 721 p->bt.hsync, p->bt.hbackporch, 722 p->bt.vfrontporch, p->bt.vsync, 723 p->bt.vbackporch, p->bt.il_vfrontporch, 724 p->bt.il_vsync, p->bt.il_vbackporch, 725 p->bt.standards, p->bt.flags); 726 break; 727 default: 728 pr_cont("type=%d\n", p->type); 729 break; 730 } 731 } 732 733 static void v4l_print_enum_dv_timings(const void *arg, bool write_only) 734 { 735 const struct v4l2_enum_dv_timings *p = arg; 736 737 pr_cont("index=%u, ", p->index); 738 v4l_print_dv_timings(&p->timings, write_only); 739 } 740 741 static void v4l_print_dv_timings_cap(const void *arg, bool write_only) 742 { 743 const struct v4l2_dv_timings_cap *p = arg; 744 745 switch (p->type) { 746 case V4L2_DV_BT_656_1120: 747 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n", 748 p->bt.min_width, p->bt.max_width, 749 p->bt.min_height, p->bt.max_height, 750 p->bt.min_pixelclock, p->bt.max_pixelclock, 751 p->bt.standards, p->bt.capabilities); 752 break; 753 default: 754 pr_cont("type=%u\n", p->type); 755 break; 756 } 757 } 758 759 static void v4l_print_frmsizeenum(const void *arg, bool write_only) 760 { 761 const struct v4l2_frmsizeenum *p = arg; 762 763 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u", 764 p->index, 765 (p->pixel_format & 0xff), 766 (p->pixel_format >> 8) & 0xff, 767 (p->pixel_format >> 16) & 0xff, 768 (p->pixel_format >> 24) & 0xff, 769 p->type); 770 switch (p->type) { 771 case V4L2_FRMSIZE_TYPE_DISCRETE: 772 pr_cont(", wxh=%ux%u\n", 773 p->discrete.width, p->discrete.height); 774 break; 775 case V4L2_FRMSIZE_TYPE_STEPWISE: 776 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n", 777 p->stepwise.min_width, 778 p->stepwise.min_height, 779 p->stepwise.max_width, 780 p->stepwise.max_height, 781 p->stepwise.step_width, 782 p->stepwise.step_height); 783 break; 784 case V4L2_FRMSIZE_TYPE_CONTINUOUS: 785 default: 786 pr_cont("\n"); 787 break; 788 } 789 } 790 791 static void v4l_print_frmivalenum(const void *arg, bool write_only) 792 { 793 const struct v4l2_frmivalenum *p = arg; 794 795 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u", 796 p->index, 797 (p->pixel_format & 0xff), 798 (p->pixel_format >> 8) & 0xff, 799 (p->pixel_format >> 16) & 0xff, 800 (p->pixel_format >> 24) & 0xff, 801 p->width, p->height, p->type); 802 switch (p->type) { 803 case V4L2_FRMIVAL_TYPE_DISCRETE: 804 pr_cont(", fps=%d/%d\n", 805 p->discrete.numerator, 806 p->discrete.denominator); 807 break; 808 case V4L2_FRMIVAL_TYPE_STEPWISE: 809 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n", 810 p->stepwise.min.numerator, 811 p->stepwise.min.denominator, 812 p->stepwise.max.numerator, 813 p->stepwise.max.denominator, 814 p->stepwise.step.numerator, 815 p->stepwise.step.denominator); 816 break; 817 case V4L2_FRMIVAL_TYPE_CONTINUOUS: 818 default: 819 pr_cont("\n"); 820 break; 821 } 822 } 823 824 static void v4l_print_event(const void *arg, bool write_only) 825 { 826 const struct v4l2_event *p = arg; 827 const struct v4l2_event_ctrl *c; 828 829 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n", 830 p->type, p->pending, p->sequence, p->id, 831 p->timestamp.tv_sec, p->timestamp.tv_nsec); 832 switch (p->type) { 833 case V4L2_EVENT_VSYNC: 834 printk(KERN_DEBUG "field=%s\n", 835 prt_names(p->u.vsync.field, v4l2_field_names)); 836 break; 837 case V4L2_EVENT_CTRL: 838 c = &p->u.ctrl; 839 printk(KERN_DEBUG "changes=0x%x, type=%u, ", 840 c->changes, c->type); 841 if (c->type == V4L2_CTRL_TYPE_INTEGER64) 842 pr_cont("value64=%lld, ", c->value64); 843 else 844 pr_cont("value=%d, ", c->value); 845 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n", 846 c->flags, c->minimum, c->maximum, 847 c->step, c->default_value); 848 break; 849 case V4L2_EVENT_FRAME_SYNC: 850 pr_cont("frame_sequence=%u\n", 851 p->u.frame_sync.frame_sequence); 852 break; 853 } 854 } 855 856 static void v4l_print_event_subscription(const void *arg, bool write_only) 857 { 858 const struct v4l2_event_subscription *p = arg; 859 860 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n", 861 p->type, p->id, p->flags); 862 } 863 864 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only) 865 { 866 const struct v4l2_sliced_vbi_cap *p = arg; 867 int i; 868 869 pr_cont("type=%s, service_set=0x%08x\n", 870 prt_names(p->type, v4l2_type_names), p->service_set); 871 for (i = 0; i < 24; i++) 872 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 873 p->service_lines[0][i], 874 p->service_lines[1][i]); 875 } 876 877 static void v4l_print_freq_band(const void *arg, bool write_only) 878 { 879 const struct v4l2_frequency_band *p = arg; 880 881 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n", 882 p->tuner, p->type, p->index, 883 p->capability, p->rangelow, 884 p->rangehigh, p->modulation); 885 } 886 887 static void v4l_print_edid(const void *arg, bool write_only) 888 { 889 const struct v4l2_edid *p = arg; 890 891 pr_cont("pad=%u, start_block=%u, blocks=%u\n", 892 p->pad, p->start_block, p->blocks); 893 } 894 895 static void v4l_print_u32(const void *arg, bool write_only) 896 { 897 pr_cont("value=%u\n", *(const u32 *)arg); 898 } 899 900 static void v4l_print_newline(const void *arg, bool write_only) 901 { 902 pr_cont("\n"); 903 } 904 905 static void v4l_print_default(const void *arg, bool write_only) 906 { 907 pr_cont("driver-specific ioctl\n"); 908 } 909 910 static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) 911 { 912 __u32 i; 913 914 /* zero the reserved fields */ 915 c->reserved[0] = 0; 916 for (i = 0; i < c->count; i++) 917 c->controls[i].reserved2[0] = 0; 918 919 /* V4L2_CID_PRIVATE_BASE cannot be used as control class 920 when using extended controls. 921 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL 922 is it allowed for backwards compatibility. 923 */ 924 if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE) 925 return 0; 926 if (!c->which) 927 return 1; 928 /* Check that all controls are from the same control class. */ 929 for (i = 0; i < c->count; i++) { 930 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { 931 c->error_idx = i; 932 return 0; 933 } 934 } 935 return 1; 936 } 937 938 static int check_fmt(struct file *file, enum v4l2_buf_type type) 939 { 940 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE | 941 V4L2_CAP_VIDEO_CAPTURE_MPLANE | 942 V4L2_CAP_VIDEO_OUTPUT | 943 V4L2_CAP_VIDEO_OUTPUT_MPLANE | 944 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE; 945 const u32 meta_caps = V4L2_CAP_META_CAPTURE | 946 V4L2_CAP_META_OUTPUT; 947 struct video_device *vfd = video_devdata(file); 948 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 949 bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO && 950 (vfd->device_caps & vid_caps); 951 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI; 952 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 953 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; 954 bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO && 955 (vfd->device_caps & meta_caps); 956 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 957 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 958 959 if (ops == NULL) 960 return -EINVAL; 961 962 switch (type) { 963 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 964 if ((is_vid || is_tch) && is_rx && 965 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane)) 966 return 0; 967 break; 968 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 969 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane) 970 return 0; 971 break; 972 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 973 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay) 974 return 0; 975 break; 976 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 977 if (is_vid && is_tx && 978 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane)) 979 return 0; 980 break; 981 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 982 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane) 983 return 0; 984 break; 985 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 986 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay) 987 return 0; 988 break; 989 case V4L2_BUF_TYPE_VBI_CAPTURE: 990 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap) 991 return 0; 992 break; 993 case V4L2_BUF_TYPE_VBI_OUTPUT: 994 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out) 995 return 0; 996 break; 997 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 998 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap) 999 return 0; 1000 break; 1001 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1002 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out) 1003 return 0; 1004 break; 1005 case V4L2_BUF_TYPE_SDR_CAPTURE: 1006 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap) 1007 return 0; 1008 break; 1009 case V4L2_BUF_TYPE_SDR_OUTPUT: 1010 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out) 1011 return 0; 1012 break; 1013 case V4L2_BUF_TYPE_META_CAPTURE: 1014 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap) 1015 return 0; 1016 break; 1017 case V4L2_BUF_TYPE_META_OUTPUT: 1018 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out) 1019 return 0; 1020 break; 1021 default: 1022 break; 1023 } 1024 return -EINVAL; 1025 } 1026 1027 static void v4l_sanitize_format(struct v4l2_format *fmt) 1028 { 1029 unsigned int offset; 1030 1031 /* Make sure num_planes is not bogus */ 1032 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1033 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 1034 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes, 1035 VIDEO_MAX_PLANES); 1036 1037 /* 1038 * The v4l2_pix_format structure has been extended with fields that were 1039 * not previously required to be set to zero by applications. The priv 1040 * field, when set to a magic value, indicates the the extended fields 1041 * are valid. Otherwise they will contain undefined values. To simplify 1042 * the API towards drivers zero the extended fields and set the priv 1043 * field to the magic value when the extended pixel format structure 1044 * isn't used by applications. 1045 */ 1046 1047 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 1048 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 1049 return; 1050 1051 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC) 1052 return; 1053 1054 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1055 1056 offset = offsetof(struct v4l2_pix_format, priv) 1057 + sizeof(fmt->fmt.pix.priv); 1058 memset(((void *)&fmt->fmt.pix) + offset, 0, 1059 sizeof(fmt->fmt.pix) - offset); 1060 } 1061 1062 static int v4l_querycap(const struct v4l2_ioctl_ops *ops, 1063 struct file *file, void *fh, void *arg) 1064 { 1065 struct v4l2_capability *cap = (struct v4l2_capability *)arg; 1066 struct video_device *vfd = video_devdata(file); 1067 int ret; 1068 1069 cap->version = LINUX_VERSION_CODE; 1070 cap->device_caps = vfd->device_caps; 1071 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS; 1072 1073 ret = ops->vidioc_querycap(file, fh, cap); 1074 1075 /* 1076 * Drivers must not change device_caps, so check for this and 1077 * warn if this happened. 1078 */ 1079 WARN_ON(cap->device_caps != vfd->device_caps); 1080 /* 1081 * Check that capabilities is a superset of 1082 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS 1083 */ 1084 WARN_ON((cap->capabilities & 1085 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) != 1086 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)); 1087 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; 1088 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; 1089 1090 return ret; 1091 } 1092 1093 static int v4l_g_input(const struct v4l2_ioctl_ops *ops, 1094 struct file *file, void *fh, void *arg) 1095 { 1096 struct video_device *vfd = video_devdata(file); 1097 1098 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1099 *(int *)arg = 0; 1100 return 0; 1101 } 1102 1103 return ops->vidioc_g_input(file, fh, arg); 1104 } 1105 1106 static int v4l_g_output(const struct v4l2_ioctl_ops *ops, 1107 struct file *file, void *fh, void *arg) 1108 { 1109 struct video_device *vfd = video_devdata(file); 1110 1111 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1112 *(int *)arg = 0; 1113 return 0; 1114 } 1115 1116 return ops->vidioc_g_output(file, fh, arg); 1117 } 1118 1119 static int v4l_s_input(const struct v4l2_ioctl_ops *ops, 1120 struct file *file, void *fh, void *arg) 1121 { 1122 struct video_device *vfd = video_devdata(file); 1123 int ret; 1124 1125 ret = v4l_enable_media_source(vfd); 1126 if (ret) 1127 return ret; 1128 1129 if (vfd->device_caps & V4L2_CAP_IO_MC) 1130 return *(int *)arg ? -EINVAL : 0; 1131 1132 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg); 1133 } 1134 1135 static int v4l_s_output(const struct v4l2_ioctl_ops *ops, 1136 struct file *file, void *fh, void *arg) 1137 { 1138 struct video_device *vfd = video_devdata(file); 1139 1140 if (vfd->device_caps & V4L2_CAP_IO_MC) 1141 return *(int *)arg ? -EINVAL : 0; 1142 1143 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg); 1144 } 1145 1146 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, 1147 struct file *file, void *fh, void *arg) 1148 { 1149 struct video_device *vfd; 1150 u32 *p = arg; 1151 1152 vfd = video_devdata(file); 1153 *p = v4l2_prio_max(vfd->prio); 1154 return 0; 1155 } 1156 1157 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, 1158 struct file *file, void *fh, void *arg) 1159 { 1160 struct video_device *vfd; 1161 struct v4l2_fh *vfh; 1162 u32 *p = arg; 1163 1164 vfd = video_devdata(file); 1165 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 1166 return -ENOTTY; 1167 vfh = file->private_data; 1168 return v4l2_prio_change(vfd->prio, &vfh->prio, *p); 1169 } 1170 1171 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, 1172 struct file *file, void *fh, void *arg) 1173 { 1174 struct video_device *vfd = video_devdata(file); 1175 struct v4l2_input *p = arg; 1176 1177 /* 1178 * We set the flags for CAP_DV_TIMINGS & 1179 * CAP_STD here based on ioctl handler provided by the 1180 * driver. If the driver doesn't support these 1181 * for a specific input, it must override these flags. 1182 */ 1183 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1184 p->capabilities |= V4L2_IN_CAP_STD; 1185 1186 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1187 if (p->index) 1188 return -EINVAL; 1189 strscpy(p->name, vfd->name, sizeof(p->name)); 1190 p->type = V4L2_INPUT_TYPE_CAMERA; 1191 return 0; 1192 } 1193 1194 return ops->vidioc_enum_input(file, fh, p); 1195 } 1196 1197 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, 1198 struct file *file, void *fh, void *arg) 1199 { 1200 struct video_device *vfd = video_devdata(file); 1201 struct v4l2_output *p = arg; 1202 1203 /* 1204 * We set the flags for CAP_DV_TIMINGS & 1205 * CAP_STD here based on ioctl handler provided by the 1206 * driver. If the driver doesn't support these 1207 * for a specific output, it must override these flags. 1208 */ 1209 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1210 p->capabilities |= V4L2_OUT_CAP_STD; 1211 1212 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1213 if (p->index) 1214 return -EINVAL; 1215 strscpy(p->name, vfd->name, sizeof(p->name)); 1216 p->type = V4L2_OUTPUT_TYPE_ANALOG; 1217 return 0; 1218 } 1219 1220 return ops->vidioc_enum_output(file, fh, p); 1221 } 1222 1223 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) 1224 { 1225 const unsigned sz = sizeof(fmt->description); 1226 const char *descr = NULL; 1227 u32 flags = 0; 1228 1229 /* 1230 * We depart from the normal coding style here since the descriptions 1231 * should be aligned so it is easy to see which descriptions will be 1232 * longer than 31 characters (the max length for a description). 1233 * And frankly, this is easier to read anyway. 1234 * 1235 * Note that gcc will use O(log N) comparisons to find the right case. 1236 */ 1237 switch (fmt->pixelformat) { 1238 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1239 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break; 1240 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break; 1241 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break; 1242 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break; 1243 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break; 1244 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break; 1245 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break; 1246 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break; 1247 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break; 1248 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break; 1249 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break; 1250 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break; 1251 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break; 1252 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break; 1253 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break; 1254 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break; 1255 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break; 1256 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break; 1257 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break; 1258 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break; 1259 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break; 1260 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break; 1261 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break; 1262 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break; 1263 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break; 1264 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break; 1265 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break; 1266 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break; 1267 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break; 1268 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break; 1269 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break; 1270 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break; 1271 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break; 1272 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break; 1273 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break; 1274 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break; 1275 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break; 1276 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break; 1277 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break; 1278 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; 1279 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; 1280 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; 1281 case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; 1282 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; 1283 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; 1284 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; 1285 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; 1286 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; 1287 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; 1288 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; 1289 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break; 1290 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break; 1291 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break; 1292 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break; 1293 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break; 1294 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break; 1295 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break; 1296 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break; 1297 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break; 1298 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break; 1299 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break; 1300 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break; 1301 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break; 1302 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break; 1303 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break; 1304 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break; 1305 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break; 1306 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break; 1307 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break; 1308 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break; 1309 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break; 1310 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break; 1311 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break; 1312 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break; 1313 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break; 1314 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break; 1315 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break; 1316 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break; 1317 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break; 1318 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break; 1319 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break; 1320 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break; 1321 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break; 1322 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break; 1323 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break; 1324 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break; 1325 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break; 1326 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break; 1327 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break; 1328 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; 1329 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; 1330 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break; 1331 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break; 1332 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break; 1333 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break; 1334 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; 1335 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; 1336 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; 1337 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break; 1338 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break; 1339 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break; 1340 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break; 1341 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break; 1342 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break; 1343 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break; 1344 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break; 1345 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break; 1346 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break; 1347 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break; 1348 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break; 1349 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break; 1350 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break; 1351 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break; 1352 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break; 1353 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break; 1354 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break; 1355 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break; 1356 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break; 1357 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break; 1358 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break; 1359 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break; 1360 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break; 1361 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break; 1362 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break; 1363 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break; 1364 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break; 1365 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break; 1366 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break; 1367 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break; 1368 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break; 1369 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break; 1370 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break; 1371 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break; 1372 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break; 1373 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break; 1374 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break; 1375 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break; 1376 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break; 1377 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break; 1378 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break; 1379 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break; 1380 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break; 1381 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break; 1382 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break; 1383 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break; 1384 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break; 1385 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break; 1386 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break; 1387 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break; 1388 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break; 1389 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break; 1390 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break; 1391 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break; 1392 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break; 1393 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break; 1394 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break; 1395 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break; 1396 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break; 1397 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break; 1398 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break; 1399 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break; 1400 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break; 1401 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break; 1402 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; 1403 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; 1404 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break; 1405 1406 default: 1407 /* Compressed formats */ 1408 flags = V4L2_FMT_FLAG_COMPRESSED; 1409 switch (fmt->pixelformat) { 1410 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1411 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break; 1412 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break; 1413 case V4L2_PIX_FMT_DV: descr = "1394"; break; 1414 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break; 1415 case V4L2_PIX_FMT_H264: descr = "H.264"; break; 1416 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break; 1417 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break; 1418 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break; 1419 case V4L2_PIX_FMT_H263: descr = "H.263"; break; 1420 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break; 1421 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break; 1422 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break; 1423 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break; 1424 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break; 1425 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break; 1426 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break; 1427 case V4L2_PIX_FMT_VP8: descr = "VP8"; break; 1428 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break; 1429 case V4L2_PIX_FMT_VP9: descr = "VP9"; break; 1430 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ 1431 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break; 1432 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ 1433 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ 1434 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; 1435 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; 1436 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; 1437 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; 1438 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; 1439 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; 1440 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; 1441 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; 1442 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; 1443 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; 1444 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; 1445 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; 1446 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; 1447 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; 1448 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; 1449 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; 1450 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; 1451 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; 1452 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break; 1453 case V4L2_PIX_FMT_SUNXI_TILED_NV12: descr = "Sunxi Tiled NV12 Format"; break; 1454 default: 1455 if (fmt->description[0]) 1456 return; 1457 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); 1458 flags = 0; 1459 snprintf(fmt->description, sz, "%c%c%c%c%s", 1460 (char)(fmt->pixelformat & 0x7f), 1461 (char)((fmt->pixelformat >> 8) & 0x7f), 1462 (char)((fmt->pixelformat >> 16) & 0x7f), 1463 (char)((fmt->pixelformat >> 24) & 0x7f), 1464 (fmt->pixelformat & (1UL << 31)) ? "-BE" : ""); 1465 break; 1466 } 1467 } 1468 1469 if (descr) 1470 WARN_ON(strscpy(fmt->description, descr, sz) < 0); 1471 fmt->flags |= flags; 1472 } 1473 1474 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, 1475 struct file *file, void *fh, void *arg) 1476 { 1477 struct video_device *vdev = video_devdata(file); 1478 struct v4l2_fmtdesc *p = arg; 1479 int ret = check_fmt(file, p->type); 1480 u32 mbus_code; 1481 u32 cap_mask; 1482 1483 if (ret) 1484 return ret; 1485 ret = -EINVAL; 1486 1487 if (!(vdev->device_caps & V4L2_CAP_IO_MC)) 1488 p->mbus_code = 0; 1489 1490 mbus_code = p->mbus_code; 1491 CLEAR_AFTER_FIELD(p, type); 1492 p->mbus_code = mbus_code; 1493 1494 switch (p->type) { 1495 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1496 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1497 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE | 1498 V4L2_CAP_VIDEO_M2M_MPLANE; 1499 if (!!(vdev->device_caps & cap_mask) != 1500 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) 1501 break; 1502 1503 if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) 1504 break; 1505 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); 1506 break; 1507 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1508 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) 1509 break; 1510 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); 1511 break; 1512 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1513 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1514 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE | 1515 V4L2_CAP_VIDEO_M2M_MPLANE; 1516 if (!!(vdev->device_caps & cap_mask) != 1517 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) 1518 break; 1519 1520 if (unlikely(!ops->vidioc_enum_fmt_vid_out)) 1521 break; 1522 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); 1523 break; 1524 case V4L2_BUF_TYPE_SDR_CAPTURE: 1525 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) 1526 break; 1527 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); 1528 break; 1529 case V4L2_BUF_TYPE_SDR_OUTPUT: 1530 if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) 1531 break; 1532 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); 1533 break; 1534 case V4L2_BUF_TYPE_META_CAPTURE: 1535 if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) 1536 break; 1537 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); 1538 break; 1539 case V4L2_BUF_TYPE_META_OUTPUT: 1540 if (unlikely(!ops->vidioc_enum_fmt_meta_out)) 1541 break; 1542 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg); 1543 break; 1544 } 1545 if (ret == 0) 1546 v4l_fill_fmtdesc(p); 1547 return ret; 1548 } 1549 1550 static void v4l_pix_format_touch(struct v4l2_pix_format *p) 1551 { 1552 /* 1553 * The v4l2_pix_format structure contains fields that make no sense for 1554 * touch. Set them to default values in this case. 1555 */ 1556 1557 p->field = V4L2_FIELD_NONE; 1558 p->colorspace = V4L2_COLORSPACE_RAW; 1559 p->flags = 0; 1560 p->ycbcr_enc = 0; 1561 p->quantization = 0; 1562 p->xfer_func = 0; 1563 } 1564 1565 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, 1566 struct file *file, void *fh, void *arg) 1567 { 1568 struct v4l2_format *p = arg; 1569 struct video_device *vfd = video_devdata(file); 1570 int ret = check_fmt(file, p->type); 1571 1572 if (ret) 1573 return ret; 1574 1575 /* 1576 * fmt can't be cleared for these overlay types due to the 'clips' 1577 * 'clipcount' and 'bitmap' pointers in struct v4l2_window. 1578 * Those are provided by the user. So handle these two overlay types 1579 * first, and then just do a simple memset for the other types. 1580 */ 1581 switch (p->type) { 1582 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1583 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: { 1584 struct v4l2_clip __user *clips = p->fmt.win.clips; 1585 u32 clipcount = p->fmt.win.clipcount; 1586 void __user *bitmap = p->fmt.win.bitmap; 1587 1588 memset(&p->fmt, 0, sizeof(p->fmt)); 1589 p->fmt.win.clips = clips; 1590 p->fmt.win.clipcount = clipcount; 1591 p->fmt.win.bitmap = bitmap; 1592 break; 1593 } 1594 default: 1595 memset(&p->fmt, 0, sizeof(p->fmt)); 1596 break; 1597 } 1598 1599 switch (p->type) { 1600 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1601 if (unlikely(!ops->vidioc_g_fmt_vid_cap)) 1602 break; 1603 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1604 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); 1605 /* just in case the driver zeroed it again */ 1606 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1607 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1608 v4l_pix_format_touch(&p->fmt.pix); 1609 return ret; 1610 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1611 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); 1612 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1613 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); 1614 case V4L2_BUF_TYPE_VBI_CAPTURE: 1615 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); 1616 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1617 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); 1618 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1619 if (unlikely(!ops->vidioc_g_fmt_vid_out)) 1620 break; 1621 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1622 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); 1623 /* just in case the driver zeroed it again */ 1624 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1625 return ret; 1626 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1627 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); 1628 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1629 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); 1630 case V4L2_BUF_TYPE_VBI_OUTPUT: 1631 return ops->vidioc_g_fmt_vbi_out(file, fh, arg); 1632 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1633 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); 1634 case V4L2_BUF_TYPE_SDR_CAPTURE: 1635 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); 1636 case V4L2_BUF_TYPE_SDR_OUTPUT: 1637 return ops->vidioc_g_fmt_sdr_out(file, fh, arg); 1638 case V4L2_BUF_TYPE_META_CAPTURE: 1639 return ops->vidioc_g_fmt_meta_cap(file, fh, arg); 1640 case V4L2_BUF_TYPE_META_OUTPUT: 1641 return ops->vidioc_g_fmt_meta_out(file, fh, arg); 1642 } 1643 return -EINVAL; 1644 } 1645 1646 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, 1647 struct file *file, void *fh, void *arg) 1648 { 1649 struct v4l2_format *p = arg; 1650 struct video_device *vfd = video_devdata(file); 1651 int ret = check_fmt(file, p->type); 1652 unsigned int i; 1653 1654 if (ret) 1655 return ret; 1656 1657 ret = v4l_enable_media_source(vfd); 1658 if (ret) 1659 return ret; 1660 v4l_sanitize_format(p); 1661 1662 switch (p->type) { 1663 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1664 if (unlikely(!ops->vidioc_s_fmt_vid_cap)) 1665 break; 1666 CLEAR_AFTER_FIELD(p, fmt.pix); 1667 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); 1668 /* just in case the driver zeroed it again */ 1669 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1670 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1671 v4l_pix_format_touch(&p->fmt.pix); 1672 return ret; 1673 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1674 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) 1675 break; 1676 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1677 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1678 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1679 bytesperline); 1680 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); 1681 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1682 if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) 1683 break; 1684 CLEAR_AFTER_FIELD(p, fmt.win); 1685 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); 1686 case V4L2_BUF_TYPE_VBI_CAPTURE: 1687 if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) 1688 break; 1689 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1690 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); 1691 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1692 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) 1693 break; 1694 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1695 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); 1696 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1697 if (unlikely(!ops->vidioc_s_fmt_vid_out)) 1698 break; 1699 CLEAR_AFTER_FIELD(p, fmt.pix); 1700 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); 1701 /* just in case the driver zeroed it again */ 1702 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1703 return ret; 1704 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1705 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) 1706 break; 1707 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1708 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1709 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1710 bytesperline); 1711 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); 1712 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1713 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) 1714 break; 1715 CLEAR_AFTER_FIELD(p, fmt.win); 1716 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); 1717 case V4L2_BUF_TYPE_VBI_OUTPUT: 1718 if (unlikely(!ops->vidioc_s_fmt_vbi_out)) 1719 break; 1720 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1721 return ops->vidioc_s_fmt_vbi_out(file, fh, arg); 1722 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1723 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) 1724 break; 1725 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1726 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); 1727 case V4L2_BUF_TYPE_SDR_CAPTURE: 1728 if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) 1729 break; 1730 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1731 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); 1732 case V4L2_BUF_TYPE_SDR_OUTPUT: 1733 if (unlikely(!ops->vidioc_s_fmt_sdr_out)) 1734 break; 1735 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1736 return ops->vidioc_s_fmt_sdr_out(file, fh, arg); 1737 case V4L2_BUF_TYPE_META_CAPTURE: 1738 if (unlikely(!ops->vidioc_s_fmt_meta_cap)) 1739 break; 1740 CLEAR_AFTER_FIELD(p, fmt.meta); 1741 return ops->vidioc_s_fmt_meta_cap(file, fh, arg); 1742 case V4L2_BUF_TYPE_META_OUTPUT: 1743 if (unlikely(!ops->vidioc_s_fmt_meta_out)) 1744 break; 1745 CLEAR_AFTER_FIELD(p, fmt.meta); 1746 return ops->vidioc_s_fmt_meta_out(file, fh, arg); 1747 } 1748 return -EINVAL; 1749 } 1750 1751 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, 1752 struct file *file, void *fh, void *arg) 1753 { 1754 struct v4l2_format *p = arg; 1755 struct video_device *vfd = video_devdata(file); 1756 int ret = check_fmt(file, p->type); 1757 unsigned int i; 1758 1759 if (ret) 1760 return ret; 1761 1762 v4l_sanitize_format(p); 1763 1764 switch (p->type) { 1765 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1766 if (unlikely(!ops->vidioc_try_fmt_vid_cap)) 1767 break; 1768 CLEAR_AFTER_FIELD(p, fmt.pix); 1769 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); 1770 /* just in case the driver zeroed it again */ 1771 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1772 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1773 v4l_pix_format_touch(&p->fmt.pix); 1774 return ret; 1775 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1776 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) 1777 break; 1778 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1779 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1780 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1781 bytesperline); 1782 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); 1783 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1784 if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) 1785 break; 1786 CLEAR_AFTER_FIELD(p, fmt.win); 1787 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); 1788 case V4L2_BUF_TYPE_VBI_CAPTURE: 1789 if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) 1790 break; 1791 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1792 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); 1793 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1794 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) 1795 break; 1796 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1797 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); 1798 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1799 if (unlikely(!ops->vidioc_try_fmt_vid_out)) 1800 break; 1801 CLEAR_AFTER_FIELD(p, fmt.pix); 1802 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); 1803 /* just in case the driver zeroed it again */ 1804 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1805 return ret; 1806 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1807 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) 1808 break; 1809 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1810 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1811 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1812 bytesperline); 1813 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); 1814 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1815 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) 1816 break; 1817 CLEAR_AFTER_FIELD(p, fmt.win); 1818 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); 1819 case V4L2_BUF_TYPE_VBI_OUTPUT: 1820 if (unlikely(!ops->vidioc_try_fmt_vbi_out)) 1821 break; 1822 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1823 return ops->vidioc_try_fmt_vbi_out(file, fh, arg); 1824 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1825 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) 1826 break; 1827 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1828 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); 1829 case V4L2_BUF_TYPE_SDR_CAPTURE: 1830 if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) 1831 break; 1832 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1833 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); 1834 case V4L2_BUF_TYPE_SDR_OUTPUT: 1835 if (unlikely(!ops->vidioc_try_fmt_sdr_out)) 1836 break; 1837 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1838 return ops->vidioc_try_fmt_sdr_out(file, fh, arg); 1839 case V4L2_BUF_TYPE_META_CAPTURE: 1840 if (unlikely(!ops->vidioc_try_fmt_meta_cap)) 1841 break; 1842 CLEAR_AFTER_FIELD(p, fmt.meta); 1843 return ops->vidioc_try_fmt_meta_cap(file, fh, arg); 1844 case V4L2_BUF_TYPE_META_OUTPUT: 1845 if (unlikely(!ops->vidioc_try_fmt_meta_out)) 1846 break; 1847 CLEAR_AFTER_FIELD(p, fmt.meta); 1848 return ops->vidioc_try_fmt_meta_out(file, fh, arg); 1849 } 1850 return -EINVAL; 1851 } 1852 1853 static int v4l_streamon(const struct v4l2_ioctl_ops *ops, 1854 struct file *file, void *fh, void *arg) 1855 { 1856 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg); 1857 } 1858 1859 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, 1860 struct file *file, void *fh, void *arg) 1861 { 1862 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg); 1863 } 1864 1865 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, 1866 struct file *file, void *fh, void *arg) 1867 { 1868 struct video_device *vfd = video_devdata(file); 1869 struct v4l2_tuner *p = arg; 1870 int err; 1871 1872 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1873 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1874 err = ops->vidioc_g_tuner(file, fh, p); 1875 if (!err) 1876 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1877 return err; 1878 } 1879 1880 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, 1881 struct file *file, void *fh, void *arg) 1882 { 1883 struct video_device *vfd = video_devdata(file); 1884 struct v4l2_tuner *p = arg; 1885 int ret; 1886 1887 ret = v4l_enable_media_source(vfd); 1888 if (ret) 1889 return ret; 1890 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1891 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1892 return ops->vidioc_s_tuner(file, fh, p); 1893 } 1894 1895 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, 1896 struct file *file, void *fh, void *arg) 1897 { 1898 struct video_device *vfd = video_devdata(file); 1899 struct v4l2_modulator *p = arg; 1900 int err; 1901 1902 if (vfd->vfl_type == VFL_TYPE_RADIO) 1903 p->type = V4L2_TUNER_RADIO; 1904 1905 err = ops->vidioc_g_modulator(file, fh, p); 1906 if (!err) 1907 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1908 return err; 1909 } 1910 1911 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, 1912 struct file *file, void *fh, void *arg) 1913 { 1914 struct video_device *vfd = video_devdata(file); 1915 struct v4l2_modulator *p = arg; 1916 1917 if (vfd->vfl_type == VFL_TYPE_RADIO) 1918 p->type = V4L2_TUNER_RADIO; 1919 1920 return ops->vidioc_s_modulator(file, fh, p); 1921 } 1922 1923 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops, 1924 struct file *file, void *fh, void *arg) 1925 { 1926 struct video_device *vfd = video_devdata(file); 1927 struct v4l2_frequency *p = arg; 1928 1929 if (vfd->vfl_type == VFL_TYPE_SDR) 1930 p->type = V4L2_TUNER_SDR; 1931 else 1932 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1933 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1934 return ops->vidioc_g_frequency(file, fh, p); 1935 } 1936 1937 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, 1938 struct file *file, void *fh, void *arg) 1939 { 1940 struct video_device *vfd = video_devdata(file); 1941 const struct v4l2_frequency *p = arg; 1942 enum v4l2_tuner_type type; 1943 int ret; 1944 1945 ret = v4l_enable_media_source(vfd); 1946 if (ret) 1947 return ret; 1948 if (vfd->vfl_type == VFL_TYPE_SDR) { 1949 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 1950 return -EINVAL; 1951 } else { 1952 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1953 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1954 if (type != p->type) 1955 return -EINVAL; 1956 } 1957 return ops->vidioc_s_frequency(file, fh, p); 1958 } 1959 1960 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, 1961 struct file *file, void *fh, void *arg) 1962 { 1963 struct video_device *vfd = video_devdata(file); 1964 struct v4l2_standard *p = arg; 1965 1966 return v4l_video_std_enumstd(p, vfd->tvnorms); 1967 } 1968 1969 static int v4l_s_std(const struct v4l2_ioctl_ops *ops, 1970 struct file *file, void *fh, void *arg) 1971 { 1972 struct video_device *vfd = video_devdata(file); 1973 v4l2_std_id id = *(v4l2_std_id *)arg, norm; 1974 int ret; 1975 1976 ret = v4l_enable_media_source(vfd); 1977 if (ret) 1978 return ret; 1979 norm = id & vfd->tvnorms; 1980 if (vfd->tvnorms && !norm) /* Check if std is supported */ 1981 return -EINVAL; 1982 1983 /* Calls the specific handler */ 1984 return ops->vidioc_s_std(file, fh, norm); 1985 } 1986 1987 static int v4l_querystd(const struct v4l2_ioctl_ops *ops, 1988 struct file *file, void *fh, void *arg) 1989 { 1990 struct video_device *vfd = video_devdata(file); 1991 v4l2_std_id *p = arg; 1992 int ret; 1993 1994 ret = v4l_enable_media_source(vfd); 1995 if (ret) 1996 return ret; 1997 /* 1998 * If no signal is detected, then the driver should return 1999 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with 2000 * any standards that do not apply removed. 2001 * 2002 * This means that tuners, audio and video decoders can join 2003 * their efforts to improve the standards detection. 2004 */ 2005 *p = vfd->tvnorms; 2006 return ops->vidioc_querystd(file, fh, arg); 2007 } 2008 2009 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, 2010 struct file *file, void *fh, void *arg) 2011 { 2012 struct video_device *vfd = video_devdata(file); 2013 struct v4l2_hw_freq_seek *p = arg; 2014 enum v4l2_tuner_type type; 2015 int ret; 2016 2017 ret = v4l_enable_media_source(vfd); 2018 if (ret) 2019 return ret; 2020 /* s_hw_freq_seek is not supported for SDR for now */ 2021 if (vfd->vfl_type == VFL_TYPE_SDR) 2022 return -EINVAL; 2023 2024 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2025 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2026 if (p->type != type) 2027 return -EINVAL; 2028 return ops->vidioc_s_hw_freq_seek(file, fh, p); 2029 } 2030 2031 static int v4l_overlay(const struct v4l2_ioctl_ops *ops, 2032 struct file *file, void *fh, void *arg) 2033 { 2034 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg); 2035 } 2036 2037 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, 2038 struct file *file, void *fh, void *arg) 2039 { 2040 struct v4l2_requestbuffers *p = arg; 2041 int ret = check_fmt(file, p->type); 2042 2043 if (ret) 2044 return ret; 2045 2046 CLEAR_AFTER_FIELD(p, capabilities); 2047 2048 return ops->vidioc_reqbufs(file, fh, p); 2049 } 2050 2051 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, 2052 struct file *file, void *fh, void *arg) 2053 { 2054 struct v4l2_buffer *p = arg; 2055 int ret = check_fmt(file, p->type); 2056 2057 return ret ? ret : ops->vidioc_querybuf(file, fh, p); 2058 } 2059 2060 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, 2061 struct file *file, void *fh, void *arg) 2062 { 2063 struct v4l2_buffer *p = arg; 2064 int ret = check_fmt(file, p->type); 2065 2066 return ret ? ret : ops->vidioc_qbuf(file, fh, p); 2067 } 2068 2069 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, 2070 struct file *file, void *fh, void *arg) 2071 { 2072 struct v4l2_buffer *p = arg; 2073 int ret = check_fmt(file, p->type); 2074 2075 return ret ? ret : ops->vidioc_dqbuf(file, fh, p); 2076 } 2077 2078 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, 2079 struct file *file, void *fh, void *arg) 2080 { 2081 struct v4l2_create_buffers *create = arg; 2082 int ret = check_fmt(file, create->format.type); 2083 2084 if (ret) 2085 return ret; 2086 2087 CLEAR_AFTER_FIELD(create, capabilities); 2088 2089 v4l_sanitize_format(&create->format); 2090 2091 ret = ops->vidioc_create_bufs(file, fh, create); 2092 2093 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 2094 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2095 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 2096 2097 return ret; 2098 } 2099 2100 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, 2101 struct file *file, void *fh, void *arg) 2102 { 2103 struct v4l2_buffer *b = arg; 2104 int ret = check_fmt(file, b->type); 2105 2106 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); 2107 } 2108 2109 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, 2110 struct file *file, void *fh, void *arg) 2111 { 2112 struct v4l2_streamparm *p = arg; 2113 v4l2_std_id std; 2114 int ret = check_fmt(file, p->type); 2115 2116 if (ret) 2117 return ret; 2118 if (ops->vidioc_g_parm) 2119 return ops->vidioc_g_parm(file, fh, p); 2120 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 2121 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2122 return -EINVAL; 2123 p->parm.capture.readbuffers = 2; 2124 ret = ops->vidioc_g_std(file, fh, &std); 2125 if (ret == 0) 2126 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); 2127 return ret; 2128 } 2129 2130 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, 2131 struct file *file, void *fh, void *arg) 2132 { 2133 struct v4l2_streamparm *p = arg; 2134 int ret = check_fmt(file, p->type); 2135 2136 if (ret) 2137 return ret; 2138 2139 /* Note: extendedmode is never used in drivers */ 2140 if (V4L2_TYPE_IS_OUTPUT(p->type)) { 2141 memset(p->parm.output.reserved, 0, 2142 sizeof(p->parm.output.reserved)); 2143 p->parm.output.extendedmode = 0; 2144 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY; 2145 } else { 2146 memset(p->parm.capture.reserved, 0, 2147 sizeof(p->parm.capture.reserved)); 2148 p->parm.capture.extendedmode = 0; 2149 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY; 2150 } 2151 return ops->vidioc_s_parm(file, fh, p); 2152 } 2153 2154 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, 2155 struct file *file, void *fh, void *arg) 2156 { 2157 struct video_device *vfd = video_devdata(file); 2158 struct v4l2_queryctrl *p = arg; 2159 struct v4l2_fh *vfh = 2160 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2161 2162 if (vfh && vfh->ctrl_handler) 2163 return v4l2_queryctrl(vfh->ctrl_handler, p); 2164 if (vfd->ctrl_handler) 2165 return v4l2_queryctrl(vfd->ctrl_handler, p); 2166 if (ops->vidioc_queryctrl) 2167 return ops->vidioc_queryctrl(file, fh, p); 2168 return -ENOTTY; 2169 } 2170 2171 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, 2172 struct file *file, void *fh, void *arg) 2173 { 2174 struct video_device *vfd = video_devdata(file); 2175 struct v4l2_query_ext_ctrl *p = arg; 2176 struct v4l2_fh *vfh = 2177 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2178 2179 if (vfh && vfh->ctrl_handler) 2180 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); 2181 if (vfd->ctrl_handler) 2182 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); 2183 if (ops->vidioc_query_ext_ctrl) 2184 return ops->vidioc_query_ext_ctrl(file, fh, p); 2185 return -ENOTTY; 2186 } 2187 2188 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, 2189 struct file *file, void *fh, void *arg) 2190 { 2191 struct video_device *vfd = video_devdata(file); 2192 struct v4l2_querymenu *p = arg; 2193 struct v4l2_fh *vfh = 2194 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2195 2196 if (vfh && vfh->ctrl_handler) 2197 return v4l2_querymenu(vfh->ctrl_handler, p); 2198 if (vfd->ctrl_handler) 2199 return v4l2_querymenu(vfd->ctrl_handler, p); 2200 if (ops->vidioc_querymenu) 2201 return ops->vidioc_querymenu(file, fh, p); 2202 return -ENOTTY; 2203 } 2204 2205 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, 2206 struct file *file, void *fh, void *arg) 2207 { 2208 struct video_device *vfd = video_devdata(file); 2209 struct v4l2_control *p = arg; 2210 struct v4l2_fh *vfh = 2211 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2212 struct v4l2_ext_controls ctrls; 2213 struct v4l2_ext_control ctrl; 2214 2215 if (vfh && vfh->ctrl_handler) 2216 return v4l2_g_ctrl(vfh->ctrl_handler, p); 2217 if (vfd->ctrl_handler) 2218 return v4l2_g_ctrl(vfd->ctrl_handler, p); 2219 if (ops->vidioc_g_ctrl) 2220 return ops->vidioc_g_ctrl(file, fh, p); 2221 if (ops->vidioc_g_ext_ctrls == NULL) 2222 return -ENOTTY; 2223 2224 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2225 ctrls.count = 1; 2226 ctrls.controls = &ctrl; 2227 ctrl.id = p->id; 2228 ctrl.value = p->value; 2229 if (check_ext_ctrls(&ctrls, 1)) { 2230 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); 2231 2232 if (ret == 0) 2233 p->value = ctrl.value; 2234 return ret; 2235 } 2236 return -EINVAL; 2237 } 2238 2239 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, 2240 struct file *file, void *fh, void *arg) 2241 { 2242 struct video_device *vfd = video_devdata(file); 2243 struct v4l2_control *p = arg; 2244 struct v4l2_fh *vfh = 2245 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2246 struct v4l2_ext_controls ctrls; 2247 struct v4l2_ext_control ctrl; 2248 2249 if (vfh && vfh->ctrl_handler) 2250 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); 2251 if (vfd->ctrl_handler) 2252 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); 2253 if (ops->vidioc_s_ctrl) 2254 return ops->vidioc_s_ctrl(file, fh, p); 2255 if (ops->vidioc_s_ext_ctrls == NULL) 2256 return -ENOTTY; 2257 2258 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2259 ctrls.count = 1; 2260 ctrls.controls = &ctrl; 2261 ctrl.id = p->id; 2262 ctrl.value = p->value; 2263 if (check_ext_ctrls(&ctrls, 1)) 2264 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls); 2265 return -EINVAL; 2266 } 2267 2268 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2269 struct file *file, void *fh, void *arg) 2270 { 2271 struct video_device *vfd = video_devdata(file); 2272 struct v4l2_ext_controls *p = arg; 2273 struct v4l2_fh *vfh = 2274 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2275 2276 p->error_idx = p->count; 2277 if (vfh && vfh->ctrl_handler) 2278 return v4l2_g_ext_ctrls(vfh->ctrl_handler, 2279 vfd, vfd->v4l2_dev->mdev, p); 2280 if (vfd->ctrl_handler) 2281 return v4l2_g_ext_ctrls(vfd->ctrl_handler, 2282 vfd, vfd->v4l2_dev->mdev, p); 2283 if (ops->vidioc_g_ext_ctrls == NULL) 2284 return -ENOTTY; 2285 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) : 2286 -EINVAL; 2287 } 2288 2289 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2290 struct file *file, void *fh, void *arg) 2291 { 2292 struct video_device *vfd = video_devdata(file); 2293 struct v4l2_ext_controls *p = arg; 2294 struct v4l2_fh *vfh = 2295 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2296 2297 p->error_idx = p->count; 2298 if (vfh && vfh->ctrl_handler) 2299 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, 2300 vfd, vfd->v4l2_dev->mdev, p); 2301 if (vfd->ctrl_handler) 2302 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, 2303 vfd, vfd->v4l2_dev->mdev, p); 2304 if (ops->vidioc_s_ext_ctrls == NULL) 2305 return -ENOTTY; 2306 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) : 2307 -EINVAL; 2308 } 2309 2310 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2311 struct file *file, void *fh, void *arg) 2312 { 2313 struct video_device *vfd = video_devdata(file); 2314 struct v4l2_ext_controls *p = arg; 2315 struct v4l2_fh *vfh = 2316 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2317 2318 p->error_idx = p->count; 2319 if (vfh && vfh->ctrl_handler) 2320 return v4l2_try_ext_ctrls(vfh->ctrl_handler, 2321 vfd, vfd->v4l2_dev->mdev, p); 2322 if (vfd->ctrl_handler) 2323 return v4l2_try_ext_ctrls(vfd->ctrl_handler, 2324 vfd, vfd->v4l2_dev->mdev, p); 2325 if (ops->vidioc_try_ext_ctrls == NULL) 2326 return -ENOTTY; 2327 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) : 2328 -EINVAL; 2329 } 2330 2331 /* 2332 * The selection API specified originally that the _MPLANE buffer types 2333 * shouldn't be used. The reasons for this are lost in the mists of time 2334 * (or just really crappy memories). Regardless, this is really annoying 2335 * for userspace. So to keep things simple we map _MPLANE buffer types 2336 * to their 'regular' counterparts before calling the driver. And we 2337 * restore it afterwards. This way applications can use either buffer 2338 * type and drivers don't need to check for both. 2339 */ 2340 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops, 2341 struct file *file, void *fh, void *arg) 2342 { 2343 struct v4l2_selection *p = arg; 2344 u32 old_type = p->type; 2345 int ret; 2346 2347 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2348 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2349 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2350 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2351 ret = ops->vidioc_g_selection(file, fh, p); 2352 p->type = old_type; 2353 return ret; 2354 } 2355 2356 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops, 2357 struct file *file, void *fh, void *arg) 2358 { 2359 struct v4l2_selection *p = arg; 2360 u32 old_type = p->type; 2361 int ret; 2362 2363 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2364 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2365 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2366 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2367 ret = ops->vidioc_s_selection(file, fh, p); 2368 p->type = old_type; 2369 return ret; 2370 } 2371 2372 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, 2373 struct file *file, void *fh, void *arg) 2374 { 2375 struct video_device *vfd = video_devdata(file); 2376 struct v4l2_crop *p = arg; 2377 struct v4l2_selection s = { 2378 .type = p->type, 2379 }; 2380 int ret; 2381 2382 /* simulate capture crop using selection api */ 2383 2384 /* crop means compose for output devices */ 2385 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2386 s.target = V4L2_SEL_TGT_COMPOSE; 2387 else 2388 s.target = V4L2_SEL_TGT_CROP; 2389 2390 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2391 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2392 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2393 2394 ret = v4l_g_selection(ops, file, fh, &s); 2395 2396 /* copying results to old structure on success */ 2397 if (!ret) 2398 p->c = s.r; 2399 return ret; 2400 } 2401 2402 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, 2403 struct file *file, void *fh, void *arg) 2404 { 2405 struct video_device *vfd = video_devdata(file); 2406 struct v4l2_crop *p = arg; 2407 struct v4l2_selection s = { 2408 .type = p->type, 2409 .r = p->c, 2410 }; 2411 2412 /* simulate capture crop using selection api */ 2413 2414 /* crop means compose for output devices */ 2415 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2416 s.target = V4L2_SEL_TGT_COMPOSE; 2417 else 2418 s.target = V4L2_SEL_TGT_CROP; 2419 2420 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2421 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2422 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2423 2424 return v4l_s_selection(ops, file, fh, &s); 2425 } 2426 2427 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, 2428 struct file *file, void *fh, void *arg) 2429 { 2430 struct video_device *vfd = video_devdata(file); 2431 struct v4l2_cropcap *p = arg; 2432 struct v4l2_selection s = { .type = p->type }; 2433 int ret = 0; 2434 2435 /* setting trivial pixelaspect */ 2436 p->pixelaspect.numerator = 1; 2437 p->pixelaspect.denominator = 1; 2438 2439 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2440 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2441 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2442 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2443 2444 /* 2445 * The determine_valid_ioctls() call already should ensure 2446 * that this can never happen, but just in case... 2447 */ 2448 if (WARN_ON(!ops->vidioc_g_selection)) 2449 return -ENOTTY; 2450 2451 if (ops->vidioc_g_pixelaspect) 2452 ret = ops->vidioc_g_pixelaspect(file, fh, s.type, 2453 &p->pixelaspect); 2454 2455 /* 2456 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the 2457 * square pixel aspect ratio in that case. 2458 */ 2459 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD) 2460 return ret; 2461 2462 /* Use g_selection() to fill in the bounds and defrect rectangles */ 2463 2464 /* obtaining bounds */ 2465 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2466 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; 2467 else 2468 s.target = V4L2_SEL_TGT_CROP_BOUNDS; 2469 2470 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2471 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ? 2472 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS; 2473 2474 ret = v4l_g_selection(ops, file, fh, &s); 2475 if (ret) 2476 return ret; 2477 p->bounds = s.r; 2478 2479 /* obtaining defrect */ 2480 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS) 2481 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; 2482 else 2483 s.target = V4L2_SEL_TGT_CROP_DEFAULT; 2484 2485 ret = v4l_g_selection(ops, file, fh, &s); 2486 if (ret) 2487 return ret; 2488 p->defrect = s.r; 2489 2490 return 0; 2491 } 2492 2493 static int v4l_log_status(const struct v4l2_ioctl_ops *ops, 2494 struct file *file, void *fh, void *arg) 2495 { 2496 struct video_device *vfd = video_devdata(file); 2497 int ret; 2498 2499 if (vfd->v4l2_dev) 2500 pr_info("%s: ================= START STATUS =================\n", 2501 vfd->v4l2_dev->name); 2502 ret = ops->vidioc_log_status(file, fh); 2503 if (vfd->v4l2_dev) 2504 pr_info("%s: ================== END STATUS ==================\n", 2505 vfd->v4l2_dev->name); 2506 return ret; 2507 } 2508 2509 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, 2510 struct file *file, void *fh, void *arg) 2511 { 2512 #ifdef CONFIG_VIDEO_ADV_DEBUG 2513 struct v4l2_dbg_register *p = arg; 2514 struct video_device *vfd = video_devdata(file); 2515 struct v4l2_subdev *sd; 2516 int idx = 0; 2517 2518 if (!capable(CAP_SYS_ADMIN)) 2519 return -EPERM; 2520 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2521 if (vfd->v4l2_dev == NULL) 2522 return -EINVAL; 2523 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2524 if (p->match.addr == idx++) 2525 return v4l2_subdev_call(sd, core, g_register, p); 2526 return -EINVAL; 2527 } 2528 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2529 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2530 return ops->vidioc_g_register(file, fh, p); 2531 return -EINVAL; 2532 #else 2533 return -ENOTTY; 2534 #endif 2535 } 2536 2537 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, 2538 struct file *file, void *fh, void *arg) 2539 { 2540 #ifdef CONFIG_VIDEO_ADV_DEBUG 2541 const struct v4l2_dbg_register *p = arg; 2542 struct video_device *vfd = video_devdata(file); 2543 struct v4l2_subdev *sd; 2544 int idx = 0; 2545 2546 if (!capable(CAP_SYS_ADMIN)) 2547 return -EPERM; 2548 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2549 if (vfd->v4l2_dev == NULL) 2550 return -EINVAL; 2551 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2552 if (p->match.addr == idx++) 2553 return v4l2_subdev_call(sd, core, s_register, p); 2554 return -EINVAL; 2555 } 2556 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2557 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2558 return ops->vidioc_s_register(file, fh, p); 2559 return -EINVAL; 2560 #else 2561 return -ENOTTY; 2562 #endif 2563 } 2564 2565 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, 2566 struct file *file, void *fh, void *arg) 2567 { 2568 #ifdef CONFIG_VIDEO_ADV_DEBUG 2569 struct video_device *vfd = video_devdata(file); 2570 struct v4l2_dbg_chip_info *p = arg; 2571 struct v4l2_subdev *sd; 2572 int idx = 0; 2573 2574 switch (p->match.type) { 2575 case V4L2_CHIP_MATCH_BRIDGE: 2576 if (ops->vidioc_s_register) 2577 p->flags |= V4L2_CHIP_FL_WRITABLE; 2578 if (ops->vidioc_g_register) 2579 p->flags |= V4L2_CHIP_FL_READABLE; 2580 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); 2581 if (ops->vidioc_g_chip_info) 2582 return ops->vidioc_g_chip_info(file, fh, arg); 2583 if (p->match.addr) 2584 return -EINVAL; 2585 return 0; 2586 2587 case V4L2_CHIP_MATCH_SUBDEV: 2588 if (vfd->v4l2_dev == NULL) 2589 break; 2590 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { 2591 if (p->match.addr != idx++) 2592 continue; 2593 if (sd->ops->core && sd->ops->core->s_register) 2594 p->flags |= V4L2_CHIP_FL_WRITABLE; 2595 if (sd->ops->core && sd->ops->core->g_register) 2596 p->flags |= V4L2_CHIP_FL_READABLE; 2597 strscpy(p->name, sd->name, sizeof(p->name)); 2598 return 0; 2599 } 2600 break; 2601 } 2602 return -EINVAL; 2603 #else 2604 return -ENOTTY; 2605 #endif 2606 } 2607 2608 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, 2609 struct file *file, void *fh, void *arg) 2610 { 2611 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK); 2612 } 2613 2614 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, 2615 struct file *file, void *fh, void *arg) 2616 { 2617 return ops->vidioc_subscribe_event(fh, arg); 2618 } 2619 2620 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, 2621 struct file *file, void *fh, void *arg) 2622 { 2623 return ops->vidioc_unsubscribe_event(fh, arg); 2624 } 2625 2626 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, 2627 struct file *file, void *fh, void *arg) 2628 { 2629 struct v4l2_sliced_vbi_cap *p = arg; 2630 int ret = check_fmt(file, p->type); 2631 2632 if (ret) 2633 return ret; 2634 2635 /* Clear up to type, everything after type is zeroed already */ 2636 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); 2637 2638 return ops->vidioc_g_sliced_vbi_cap(file, fh, p); 2639 } 2640 2641 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, 2642 struct file *file, void *fh, void *arg) 2643 { 2644 struct video_device *vfd = video_devdata(file); 2645 struct v4l2_frequency_band *p = arg; 2646 enum v4l2_tuner_type type; 2647 int err; 2648 2649 if (vfd->vfl_type == VFL_TYPE_SDR) { 2650 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2651 return -EINVAL; 2652 type = p->type; 2653 } else { 2654 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2655 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2656 if (type != p->type) 2657 return -EINVAL; 2658 } 2659 if (ops->vidioc_enum_freq_bands) { 2660 err = ops->vidioc_enum_freq_bands(file, fh, p); 2661 if (err != -ENOTTY) 2662 return err; 2663 } 2664 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { 2665 struct v4l2_tuner t = { 2666 .index = p->tuner, 2667 .type = type, 2668 }; 2669 2670 if (p->index) 2671 return -EINVAL; 2672 err = ops->vidioc_g_tuner(file, fh, &t); 2673 if (err) 2674 return err; 2675 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2676 p->rangelow = t.rangelow; 2677 p->rangehigh = t.rangehigh; 2678 p->modulation = (type == V4L2_TUNER_RADIO) ? 2679 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2680 return 0; 2681 } 2682 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { 2683 struct v4l2_modulator m = { 2684 .index = p->tuner, 2685 }; 2686 2687 if (type != V4L2_TUNER_RADIO) 2688 return -EINVAL; 2689 if (p->index) 2690 return -EINVAL; 2691 err = ops->vidioc_g_modulator(file, fh, &m); 2692 if (err) 2693 return err; 2694 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2695 p->rangelow = m.rangelow; 2696 p->rangehigh = m.rangehigh; 2697 p->modulation = (type == V4L2_TUNER_RADIO) ? 2698 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2699 return 0; 2700 } 2701 return -ENOTTY; 2702 } 2703 2704 struct v4l2_ioctl_info { 2705 unsigned int ioctl; 2706 u32 flags; 2707 const char * const name; 2708 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file, 2709 void *fh, void *p); 2710 void (*debug)(const void *arg, bool write_only); 2711 }; 2712 2713 /* This control needs a priority check */ 2714 #define INFO_FL_PRIO (1 << 0) 2715 /* This control can be valid if the filehandle passes a control handler. */ 2716 #define INFO_FL_CTRL (1 << 1) 2717 /* Queuing ioctl */ 2718 #define INFO_FL_QUEUE (1 << 2) 2719 /* Always copy back result, even on error */ 2720 #define INFO_FL_ALWAYS_COPY (1 << 3) 2721 /* Zero struct from after the field to the end */ 2722 #define INFO_FL_CLEAR(v4l2_struct, field) \ 2723 ((offsetof(struct v4l2_struct, field) + \ 2724 sizeof_field(struct v4l2_struct, field)) << 16) 2725 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) 2726 2727 #define DEFINE_V4L_STUB_FUNC(_vidioc) \ 2728 static int v4l_stub_ ## _vidioc( \ 2729 const struct v4l2_ioctl_ops *ops, \ 2730 struct file *file, void *fh, void *p) \ 2731 { \ 2732 return ops->vidioc_ ## _vidioc(file, fh, p); \ 2733 } 2734 2735 #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \ 2736 [_IOC_NR(_ioctl)] = { \ 2737 .ioctl = _ioctl, \ 2738 .flags = _flags, \ 2739 .name = #_ioctl, \ 2740 .func = _func, \ 2741 .debug = _debug, \ 2742 } 2743 2744 DEFINE_V4L_STUB_FUNC(g_fbuf) 2745 DEFINE_V4L_STUB_FUNC(s_fbuf) 2746 DEFINE_V4L_STUB_FUNC(expbuf) 2747 DEFINE_V4L_STUB_FUNC(g_std) 2748 DEFINE_V4L_STUB_FUNC(g_audio) 2749 DEFINE_V4L_STUB_FUNC(s_audio) 2750 DEFINE_V4L_STUB_FUNC(g_edid) 2751 DEFINE_V4L_STUB_FUNC(s_edid) 2752 DEFINE_V4L_STUB_FUNC(g_audout) 2753 DEFINE_V4L_STUB_FUNC(s_audout) 2754 DEFINE_V4L_STUB_FUNC(g_jpegcomp) 2755 DEFINE_V4L_STUB_FUNC(s_jpegcomp) 2756 DEFINE_V4L_STUB_FUNC(enumaudio) 2757 DEFINE_V4L_STUB_FUNC(enumaudout) 2758 DEFINE_V4L_STUB_FUNC(enum_framesizes) 2759 DEFINE_V4L_STUB_FUNC(enum_frameintervals) 2760 DEFINE_V4L_STUB_FUNC(g_enc_index) 2761 DEFINE_V4L_STUB_FUNC(encoder_cmd) 2762 DEFINE_V4L_STUB_FUNC(try_encoder_cmd) 2763 DEFINE_V4L_STUB_FUNC(decoder_cmd) 2764 DEFINE_V4L_STUB_FUNC(try_decoder_cmd) 2765 DEFINE_V4L_STUB_FUNC(s_dv_timings) 2766 DEFINE_V4L_STUB_FUNC(g_dv_timings) 2767 DEFINE_V4L_STUB_FUNC(enum_dv_timings) 2768 DEFINE_V4L_STUB_FUNC(query_dv_timings) 2769 DEFINE_V4L_STUB_FUNC(dv_timings_cap) 2770 2771 static const struct v4l2_ioctl_info v4l2_ioctls[] = { 2772 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), 2773 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0), 2774 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), 2775 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), 2776 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2777 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), 2778 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0), 2779 IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), 2780 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), 2781 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), 2782 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), 2783 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), 2784 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2785 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2786 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), 2787 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), 2788 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0), 2789 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), 2790 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), 2791 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), 2792 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), 2793 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), 2794 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), 2795 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), 2796 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0), 2797 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO), 2798 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), 2799 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), 2800 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0), 2801 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), 2802 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY), 2803 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY), 2804 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0), 2805 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), 2806 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), 2807 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0), 2808 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO), 2809 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), 2810 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), 2811 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), 2812 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), 2813 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), 2814 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), 2815 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), 2816 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), 2817 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), 2818 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0), 2819 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), 2820 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), 2821 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), 2822 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), 2823 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), 2824 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), 2825 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), 2826 IOCTL_INFO(VIDIOC_G_SLICED_VBI_CAP, v4l_g_sliced_vbi_cap, v4l_print_sliced_vbi_cap, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)), 2827 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), 2828 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2829 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL), 2830 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2831 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), 2832 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), 2833 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0), 2834 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2835 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2836 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), 2837 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0), 2838 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), 2839 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), 2840 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), 2841 IOCTL_INFO(VIDIOC_S_DV_TIMINGS, v4l_stub_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_dv_timings, bt.flags)), 2842 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0), 2843 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), 2844 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), 2845 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), 2846 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2847 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), 2848 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), 2849 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY), 2850 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)), 2851 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), 2852 IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)), 2853 IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)), 2854 }; 2855 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) 2856 2857 static bool v4l2_is_known_ioctl(unsigned int cmd) 2858 { 2859 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2860 return false; 2861 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; 2862 } 2863 2864 static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, 2865 struct v4l2_fh *vfh, unsigned int cmd, 2866 void *arg) 2867 { 2868 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2869 return vdev->lock; 2870 if (vfh && vfh->m2m_ctx && 2871 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) { 2872 if (vfh->m2m_ctx->q_lock) 2873 return vfh->m2m_ctx->q_lock; 2874 } 2875 if (vdev->queue && vdev->queue->lock && 2876 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) 2877 return vdev->queue->lock; 2878 return vdev->lock; 2879 } 2880 2881 /* Common ioctl debug function. This function can be used by 2882 external ioctl messages as well as internal V4L ioctl */ 2883 void v4l_printk_ioctl(const char *prefix, unsigned int cmd) 2884 { 2885 const char *dir, *type; 2886 2887 if (prefix) 2888 printk(KERN_DEBUG "%s: ", prefix); 2889 2890 switch (_IOC_TYPE(cmd)) { 2891 case 'd': 2892 type = "v4l2_int"; 2893 break; 2894 case 'V': 2895 if (_IOC_NR(cmd) >= V4L2_IOCTLS) { 2896 type = "v4l2"; 2897 break; 2898 } 2899 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); 2900 return; 2901 default: 2902 type = "unknown"; 2903 break; 2904 } 2905 2906 switch (_IOC_DIR(cmd)) { 2907 case _IOC_NONE: dir = "--"; break; 2908 case _IOC_READ: dir = "r-"; break; 2909 case _IOC_WRITE: dir = "-w"; break; 2910 case _IOC_READ | _IOC_WRITE: dir = "rw"; break; 2911 default: dir = "*ERR*"; break; 2912 } 2913 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", 2914 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); 2915 } 2916 EXPORT_SYMBOL(v4l_printk_ioctl); 2917 2918 static long __video_do_ioctl(struct file *file, 2919 unsigned int cmd, void *arg) 2920 { 2921 struct video_device *vfd = video_devdata(file); 2922 struct mutex *req_queue_lock = NULL; 2923 struct mutex *lock; /* ioctl serialization mutex */ 2924 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 2925 bool write_only = false; 2926 struct v4l2_ioctl_info default_info; 2927 const struct v4l2_ioctl_info *info; 2928 void *fh = file->private_data; 2929 struct v4l2_fh *vfh = NULL; 2930 int dev_debug = vfd->dev_debug; 2931 long ret = -ENOTTY; 2932 2933 if (ops == NULL) { 2934 pr_warn("%s: has no ioctl_ops.\n", 2935 video_device_node_name(vfd)); 2936 return ret; 2937 } 2938 2939 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 2940 vfh = file->private_data; 2941 2942 /* 2943 * We need to serialize streamon/off with queueing new requests. 2944 * These ioctls may trigger the cancellation of a streaming 2945 * operation, and that should not be mixed with queueing a new 2946 * request at the same time. 2947 */ 2948 if (v4l2_device_supports_requests(vfd->v4l2_dev) && 2949 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) { 2950 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex; 2951 2952 if (mutex_lock_interruptible(req_queue_lock)) 2953 return -ERESTARTSYS; 2954 } 2955 2956 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg); 2957 2958 if (lock && mutex_lock_interruptible(lock)) { 2959 if (req_queue_lock) 2960 mutex_unlock(req_queue_lock); 2961 return -ERESTARTSYS; 2962 } 2963 2964 if (!video_is_registered(vfd)) { 2965 ret = -ENODEV; 2966 goto unlock; 2967 } 2968 2969 if (v4l2_is_known_ioctl(cmd)) { 2970 info = &v4l2_ioctls[_IOC_NR(cmd)]; 2971 2972 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && 2973 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) 2974 goto done; 2975 2976 if (vfh && (info->flags & INFO_FL_PRIO)) { 2977 ret = v4l2_prio_check(vfd->prio, vfh->prio); 2978 if (ret) 2979 goto done; 2980 } 2981 } else { 2982 default_info.ioctl = cmd; 2983 default_info.flags = 0; 2984 default_info.debug = v4l_print_default; 2985 info = &default_info; 2986 } 2987 2988 write_only = _IOC_DIR(cmd) == _IOC_WRITE; 2989 if (info != &default_info) { 2990 ret = info->func(ops, file, fh, arg); 2991 } else if (!ops->vidioc_default) { 2992 ret = -ENOTTY; 2993 } else { 2994 ret = ops->vidioc_default(file, fh, 2995 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, 2996 cmd, arg); 2997 } 2998 2999 done: 3000 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { 3001 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && 3002 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) 3003 goto unlock; 3004 3005 v4l_printk_ioctl(video_device_node_name(vfd), cmd); 3006 if (ret < 0) 3007 pr_cont(": error %ld", ret); 3008 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) 3009 pr_cont("\n"); 3010 else if (_IOC_DIR(cmd) == _IOC_NONE) 3011 info->debug(arg, write_only); 3012 else { 3013 pr_cont(": "); 3014 info->debug(arg, write_only); 3015 } 3016 } 3017 3018 unlock: 3019 if (lock) 3020 mutex_unlock(lock); 3021 if (req_queue_lock) 3022 mutex_unlock(req_queue_lock); 3023 return ret; 3024 } 3025 3026 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, 3027 void __user **user_ptr, void ***kernel_ptr) 3028 { 3029 int ret = 0; 3030 3031 switch (cmd) { 3032 case VIDIOC_PREPARE_BUF: 3033 case VIDIOC_QUERYBUF: 3034 case VIDIOC_QBUF: 3035 case VIDIOC_DQBUF: { 3036 struct v4l2_buffer *buf = parg; 3037 3038 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { 3039 if (buf->length > VIDEO_MAX_PLANES) { 3040 ret = -EINVAL; 3041 break; 3042 } 3043 *user_ptr = (void __user *)buf->m.planes; 3044 *kernel_ptr = (void **)&buf->m.planes; 3045 *array_size = sizeof(struct v4l2_plane) * buf->length; 3046 ret = 1; 3047 } 3048 break; 3049 } 3050 3051 case VIDIOC_G_EDID: 3052 case VIDIOC_S_EDID: { 3053 struct v4l2_edid *edid = parg; 3054 3055 if (edid->blocks) { 3056 if (edid->blocks > 256) { 3057 ret = -EINVAL; 3058 break; 3059 } 3060 *user_ptr = (void __user *)edid->edid; 3061 *kernel_ptr = (void **)&edid->edid; 3062 *array_size = edid->blocks * 128; 3063 ret = 1; 3064 } 3065 break; 3066 } 3067 3068 case VIDIOC_S_EXT_CTRLS: 3069 case VIDIOC_G_EXT_CTRLS: 3070 case VIDIOC_TRY_EXT_CTRLS: { 3071 struct v4l2_ext_controls *ctrls = parg; 3072 3073 if (ctrls->count != 0) { 3074 if (ctrls->count > V4L2_CID_MAX_CTRLS) { 3075 ret = -EINVAL; 3076 break; 3077 } 3078 *user_ptr = (void __user *)ctrls->controls; 3079 *kernel_ptr = (void **)&ctrls->controls; 3080 *array_size = sizeof(struct v4l2_ext_control) 3081 * ctrls->count; 3082 ret = 1; 3083 } 3084 break; 3085 } 3086 } 3087 3088 return ret; 3089 } 3090 3091 static unsigned int video_translate_cmd(unsigned int cmd) 3092 { 3093 switch (cmd) { 3094 #ifdef CONFIG_COMPAT_32BIT_TIME 3095 case VIDIOC_DQEVENT_TIME32: 3096 return VIDIOC_DQEVENT; 3097 case VIDIOC_QUERYBUF_TIME32: 3098 return VIDIOC_QUERYBUF; 3099 case VIDIOC_QBUF_TIME32: 3100 return VIDIOC_QBUF; 3101 case VIDIOC_DQBUF_TIME32: 3102 return VIDIOC_DQBUF; 3103 case VIDIOC_PREPARE_BUF_TIME32: 3104 return VIDIOC_PREPARE_BUF; 3105 #endif 3106 } 3107 3108 return cmd; 3109 } 3110 3111 static int video_get_user(void __user *arg, void *parg, unsigned int cmd, 3112 bool *always_copy) 3113 { 3114 unsigned int n = _IOC_SIZE(cmd); 3115 3116 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) { 3117 /* read-only ioctl */ 3118 memset(parg, 0, n); 3119 return 0; 3120 } 3121 3122 switch (cmd) { 3123 #ifdef CONFIG_COMPAT_32BIT_TIME 3124 case VIDIOC_QUERYBUF_TIME32: 3125 case VIDIOC_QBUF_TIME32: 3126 case VIDIOC_DQBUF_TIME32: 3127 case VIDIOC_PREPARE_BUF_TIME32: { 3128 struct v4l2_buffer_time32 vb32; 3129 struct v4l2_buffer *vb = parg; 3130 3131 if (copy_from_user(&vb32, arg, sizeof(vb32))) 3132 return -EFAULT; 3133 3134 *vb = (struct v4l2_buffer) { 3135 .index = vb32.index, 3136 .type = vb32.type, 3137 .bytesused = vb32.bytesused, 3138 .flags = vb32.flags, 3139 .field = vb32.field, 3140 .timestamp.tv_sec = vb32.timestamp.tv_sec, 3141 .timestamp.tv_usec = vb32.timestamp.tv_usec, 3142 .timecode = vb32.timecode, 3143 .sequence = vb32.sequence, 3144 .memory = vb32.memory, 3145 .m.userptr = vb32.m.userptr, 3146 .length = vb32.length, 3147 .request_fd = vb32.request_fd, 3148 }; 3149 3150 if (cmd == VIDIOC_QUERYBUF_TIME32) 3151 vb->request_fd = 0; 3152 3153 break; 3154 } 3155 #endif 3156 default: 3157 /* 3158 * In some cases, only a few fields are used as input, 3159 * i.e. when the app sets "index" and then the driver 3160 * fills in the rest of the structure for the thing 3161 * with that index. We only need to copy up the first 3162 * non-input field. 3163 */ 3164 if (v4l2_is_known_ioctl(cmd)) { 3165 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags; 3166 3167 if (flags & INFO_FL_CLEAR_MASK) 3168 n = (flags & INFO_FL_CLEAR_MASK) >> 16; 3169 *always_copy = flags & INFO_FL_ALWAYS_COPY; 3170 } 3171 3172 if (copy_from_user(parg, (void __user *)arg, n)) 3173 return -EFAULT; 3174 3175 /* zero out anything we don't copy from userspace */ 3176 if (n < _IOC_SIZE(cmd)) 3177 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n); 3178 break; 3179 } 3180 3181 return 0; 3182 } 3183 3184 static int video_put_user(void __user *arg, void *parg, unsigned int cmd) 3185 { 3186 if (!(_IOC_DIR(cmd) & _IOC_READ)) 3187 return 0; 3188 3189 switch (cmd) { 3190 #ifdef CONFIG_COMPAT_32BIT_TIME 3191 case VIDIOC_DQEVENT_TIME32: { 3192 struct v4l2_event *ev = parg; 3193 struct v4l2_event_time32 ev32; 3194 3195 memset(&ev32, 0, sizeof(ev32)); 3196 3197 ev32.type = ev->type; 3198 ev32.pending = ev->pending; 3199 ev32.sequence = ev->sequence; 3200 ev32.timestamp.tv_sec = ev->timestamp.tv_sec; 3201 ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec; 3202 ev32.id = ev->id; 3203 3204 memcpy(&ev32.u, &ev->u, sizeof(ev->u)); 3205 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved)); 3206 3207 if (copy_to_user(arg, &ev32, sizeof(ev32))) 3208 return -EFAULT; 3209 break; 3210 } 3211 case VIDIOC_QUERYBUF_TIME32: 3212 case VIDIOC_QBUF_TIME32: 3213 case VIDIOC_DQBUF_TIME32: 3214 case VIDIOC_PREPARE_BUF_TIME32: { 3215 struct v4l2_buffer *vb = parg; 3216 struct v4l2_buffer_time32 vb32; 3217 3218 memset(&vb32, 0, sizeof(vb32)); 3219 3220 vb32.index = vb->index; 3221 vb32.type = vb->type; 3222 vb32.bytesused = vb->bytesused; 3223 vb32.flags = vb->flags; 3224 vb32.field = vb->field; 3225 vb32.timestamp.tv_sec = vb->timestamp.tv_sec; 3226 vb32.timestamp.tv_usec = vb->timestamp.tv_usec; 3227 vb32.timecode = vb->timecode; 3228 vb32.sequence = vb->sequence; 3229 vb32.memory = vb->memory; 3230 vb32.m.userptr = vb->m.userptr; 3231 vb32.length = vb->length; 3232 vb32.request_fd = vb->request_fd; 3233 3234 if (copy_to_user(arg, &vb32, sizeof(vb32))) 3235 return -EFAULT; 3236 break; 3237 } 3238 #endif 3239 default: 3240 /* Copy results into user buffer */ 3241 if (copy_to_user(arg, parg, _IOC_SIZE(cmd))) 3242 return -EFAULT; 3243 break; 3244 } 3245 3246 return 0; 3247 } 3248 3249 long 3250 video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg, 3251 v4l2_kioctl func) 3252 { 3253 char sbuf[128]; 3254 void *mbuf = NULL; 3255 void *parg = (void *)arg; 3256 long err = -EINVAL; 3257 bool has_array_args; 3258 bool always_copy = false; 3259 size_t array_size = 0; 3260 void __user *user_ptr = NULL; 3261 void **kernel_ptr = NULL; 3262 unsigned int cmd = video_translate_cmd(orig_cmd); 3263 const size_t ioc_size = _IOC_SIZE(cmd); 3264 3265 /* Copy arguments into temp kernel buffer */ 3266 if (_IOC_DIR(cmd) != _IOC_NONE) { 3267 if (ioc_size <= sizeof(sbuf)) { 3268 parg = sbuf; 3269 } else { 3270 /* too big to allocate from stack */ 3271 mbuf = kvmalloc(ioc_size, GFP_KERNEL); 3272 if (NULL == mbuf) 3273 return -ENOMEM; 3274 parg = mbuf; 3275 } 3276 3277 err = video_get_user((void __user *)arg, parg, orig_cmd, 3278 &always_copy); 3279 if (err) 3280 goto out; 3281 } 3282 3283 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); 3284 if (err < 0) 3285 goto out; 3286 has_array_args = err; 3287 3288 if (has_array_args) { 3289 /* 3290 * When adding new types of array args, make sure that the 3291 * parent argument to ioctl (which contains the pointer to the 3292 * array) fits into sbuf (so that mbuf will still remain 3293 * unused up to here). 3294 */ 3295 mbuf = kvmalloc(array_size, GFP_KERNEL); 3296 err = -ENOMEM; 3297 if (NULL == mbuf) 3298 goto out_array_args; 3299 err = -EFAULT; 3300 if (copy_from_user(mbuf, user_ptr, array_size)) 3301 goto out_array_args; 3302 *kernel_ptr = mbuf; 3303 } 3304 3305 /* Handles IOCTL */ 3306 err = func(file, cmd, parg); 3307 if (err == -ENOTTY || err == -ENOIOCTLCMD) { 3308 err = -ENOTTY; 3309 goto out; 3310 } 3311 3312 if (err == 0) { 3313 if (cmd == VIDIOC_DQBUF) 3314 trace_v4l2_dqbuf(video_devdata(file)->minor, parg); 3315 else if (cmd == VIDIOC_QBUF) 3316 trace_v4l2_qbuf(video_devdata(file)->minor, parg); 3317 } 3318 3319 if (has_array_args) { 3320 *kernel_ptr = (void __force *)user_ptr; 3321 if (copy_to_user(user_ptr, mbuf, array_size)) 3322 err = -EFAULT; 3323 goto out_array_args; 3324 } 3325 /* 3326 * Some ioctls can return an error, but still have valid 3327 * results that must be returned. 3328 */ 3329 if (err < 0 && !always_copy) 3330 goto out; 3331 3332 out_array_args: 3333 if (video_put_user((void __user *)arg, parg, orig_cmd)) 3334 err = -EFAULT; 3335 out: 3336 kvfree(mbuf); 3337 return err; 3338 } 3339 3340 long video_ioctl2(struct file *file, 3341 unsigned int cmd, unsigned long arg) 3342 { 3343 return video_usercopy(file, cmd, arg, __video_do_ioctl); 3344 } 3345 EXPORT_SYMBOL(video_ioctl2); 3346